{
 "checked": "1–2 November 2026",
 "items": [
  {
   "id": "filament_asa",
   "item": "ASA filament",
   "short": "ASA",
   "spec": "1.75 mm, 1 kg; for every rigid part",
   "local": "νήμα ASA 1.75 mm",
   "always": true,
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/elegoo-asa-1kg-grey.html",
     "title": "Elegoo ASA 1kg – Grey",
     "pack": "1 kg",
     "price_eur": "16.80",
     "match": "exact",
     "note": "1.75 mm, in stock."
    }
   ]
  },
  {
   "id": "filament_tpu85a",
   "item": "TPU filament",
   "short": "TPU",
   "spec": "TPU 85A, 1.75 mm; for the seals",
   "local": "νήμα TPU 85A",
   "always": true,
   "options": [
    {
     "shop": "3DHUB",
     "country": "GR",
     "url": "https://www.3dhub.gr/shop/consumables/bambu-lab-tpu-85a-tpu-90a-filament-1kg/",
     "title": "Bambu Lab TPU 85A, 1.75 mm",
     "pack": "1 kg",
     "price_eur": "49.90",
     "match": "exact",
     "note": "Pick TPU 85A on the page (it also sells 90A at €45.90). Only Lime Green and Neon Orange were in stock. Bambu says it can't go through an AMS or AMS lite, only an AMS HT."
    },
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/esun-eflex-tpu-87a-1-75mm-1kg-natural.html",
     "title": "eSUN eFlex TPU-87A 1.75mm 1kg",
     "pack": "1 kg",
     "price_eur": "39.90",
     "match": "alternative",
     "note": "No 85A sold; 87A is the closest."
    }
   ]
  },
  {
   "id": "m3_screw",
   "item": "M3 socket screws",
   "short": "M3 screw",
   "spec": "DIN 912, A2/A4; 8, 10, 14 and 16 mm long",
   "local": "βίδα άλλεν M3 inox DIN 912",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/bolt-m3-din-912.html",
     "title": "Βίδα M3 - DIN912 Ανοξείδωτη",
     "pack": "per piece; 100+ discount",
     "price_eur": "0.08 (L10) / 0.06 (L14, L16)",
     "match": "exact",
     "note": "Stainless (A2 suffix); lengths 4,6,8,10,14,16,20,30 mm, no L12."
    }
   ]
  },
  {
   "id": "m3_square_nut",
   "item": "M3 square nuts",
   "short": "square nut",
   "spec": "DIN 562, 5.5 × 1.8 mm",
   "local": "τετράγωνο παξιμάδι M3 DIN 562 inox",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/nut-m3-steel-square-100-pcs.html",
     "title": "Παξιμάδι Μ3 Ατσάλινο Τετράγωνο - 100 Τμχ.",
     "pack": "100 pcs",
     "price_eur": "1.40",
     "match": "close",
     "note": "Plain steel, not stainless; 5.5 mm across flats, thickness not stated."
    },
    {
     "shop": "BefestigungsFuchs",
     "country": "DE",
     "url": "https://www.befestigungsfuchs.de/1-vierkantmutter-niedrige-form-din-562-edelstahl-a2-m3",
     "title": "DIN 562 square nut, A2 stainless, M3",
     "pack": "1, or packs of 100, 200 and 500",
     "price_eur": "0.46 each",
     "match": "exact",
     "note": "The stainless version, 1.8 mm thick."
    },
    {
     "shop": "Würth Hellas",
     "country": "GR",
     "url": "https://eshop.wurth.gr/-/DIN-562-A2/31103512180201.cyid/3110.cgid/el/GR/EUR/",
     "title": "DIN 562 square nut, A2 stainless",
     "pack": "",
     "price_eur": "",
     "match": "close",
     "note": "Trade customers only: log in, or ask at a Würth branch for the price. The size list didn't load, so check M3 is there."
    }
   ]
  },
  {
   "id": "m3_washer",
   "item": "M3 washers",
   "short": "washer",
   "spec": "A2/A4; 9 mm across (DIN 9021) where the list says so, otherwise DIN 125",
   "local": "ροδέλα M3 inox",
   "options": [
    {
     "shop": "Inox Store",
     "country": "GR",
     "url": "https://www.inoxstore.gr/product/rodeles-fardies-3xd-din-9021-inox-a2/",
     "title": "DIN 9021 wide washers, A2 stainless",
     "pack": "50 (pick Φ3 × 9 mm)",
     "price_eur": "2.80",
     "match": "exact",
     "note": "The 9 mm washers. In stock."
    },
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/m3mm.html",
     "title": "Ροδέλα M3 Stainless A2 - 100τμχ",
     "pack": "100 pcs",
     "price_eur": "1.00",
     "match": "close",
     "note": "A2, 3.2 × 7 mm (DIN 125, not DIN 9021); sold out when checked; steel fallback [link](https://grobotronics.com/washer-m3-metal.html)"
    }
   ]
  },
  {
   "id": "m3_spacer",
   "item": "M3 spacer",
   "short": "spacer",
   "spec": "unthreaded, 3.2 mm hole, 6 mm across, 5 mm long",
   "local": "αποστάτης M3 6x5 mm",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/spacer-metal-id3.2mm-l3mm.html?variation_id=9789",
     "title": "Αποστάτης Μεταλλικός ID3.2mm (L5 variation)",
     "pack": "per piece",
     "price_eur": "0.20",
     "match": "exact",
     "note": "Brass, 3.2 × 6 mm; lengths 3-30 mm; ships in 1-3 days."
    }
   ]
  },
  {
   "id": "m4_screw_nut",
   "item": "M4 screws, nuts and washers",
   "short": "M4 screw",
   "spec": "DIN 912, A2/A4, 20 and 25 mm; nuts and washers",
   "local": "βίδα άλλεν M4 inox",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/bolt-m4-din912-stainless-a4.html",
     "title": "Βίδα Μ4 - DIN912 Ανοξείδωτη A4",
     "pack": "per piece",
     "price_eur": "0.10 (L10/L16), 0.15 (L25)",
     "match": "exact",
     "note": "Nuts: [link](https://grobotronics.com/nut-m4-stainless-steel-100-pcs.html) (A2, 100 pcs, 1.40)."
    }
   ]
  },
  {
   "id": "m4_nyloc",
   "item": "M4 nyloc nuts",
   "short": "M4 nyloc",
   "spec": "DIN 985, A2/A4",
   "local": "παξιμάδι ασφαλείας M4 inox DIN 985",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/nut-m4-safety-stainless-a4.html",
     "title": "Παξιμάδι M4 Ασφαλείας Ανοξείδωτο A4",
     "pack": "min 100 pcs",
     "price_eur": "0.08 each (0.04 at 100+)",
     "match": "exact",
     "note": "A4 stainless; sold out when checked. Plain steel fallback: [link](https://grobotronics.com/m4mm.html)"
    }
   ]
  },
  {
   "id": "m4_eye_bolt",
   "item": "M4 eye bolts",
   "short": "eye bolt",
   "spec": "DIN 444 type, A2/A4, M4 × 40 (M4 × 70 for the spring latch); the eye at most 10 mm across",
   "local": "μπουλόνι με μάτι (κρικοβίδα) M4 inox DIN 444",
   "options": [
    {
     "shop": "Amazon.de",
     "country": "DE",
     "url": "https://www.amazon.de/dp/B0GGXBPMG5",
     "title": "M4 eye bolts, A2 stainless",
     "pack": "5",
     "price_eur": "6.14",
     "match": "alternative",
     "note": "The page gives no length, eye size or DIN type: check the eye is at most 10 mm across and 5.5 mm thick. Free delivery to Greece on orders over €59. DIN 444 eye bolts start at M5, so no true M4 one was found."
    }
   ]
  },
  {
   "id": "m5_rod",
   "item": "M5 socket screws",
   "short": "M5 screw",
   "spec": "DIN 912, A2/A4, 25, 30, 40 and 50 mm",
   "local": "βίδα άλλεν M5 inox DIN 912",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/bolt-5-din912-stainless.html",
     "title": "Βίδα Μ5 - DIN912 Ανοξείδωτη",
     "pack": "per piece",
     "price_eur": "0.16 (L40) / 0.20 (L50)",
     "match": "exact",
     "note": "A2 socket screws 10-60 mm; no M5 threaded rod."
    }
   ]
  },
  {
   "id": "m5_nut",
   "item": "M5 nuts",
   "short": "nut",
   "spec": "DIN 934, A2/A4",
   "local": "παξιμάδι M5 inox DIN 934",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/stainless-steel-nuts-assortment-kit-m3-m10-300pcs.html",
     "title": "Σετ Παξιμάδια από Ανοξείδωτο Ατσάλι M3-M10 – 300τμχ",
     "pack": "300-pc kit (M5 x70)",
     "price_eur": "9.60",
     "match": "close",
     "note": "Stainless DIN 934 assortment; no DIN 439 jam nut found."
    }
   ]
  },
  {
   "id": "m5_nyloc",
   "item": "M5 nyloc nuts",
   "short": "M5 nyloc",
   "spec": "DIN 985, A2/A4",
   "local": "παξιμάδι ασφαλείας M5 inox DIN 985",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/safety-nut-5mm-stainless-steel.html",
     "title": "Παξιμάδι M5 Ασφαλείας Ανοξείδωτο",
     "pack": "min 100 pcs",
     "price_eur": "0.06 each",
     "match": "exact",
     "note": "Stainless nyloc, AF 8."
    }
   ]
  },
  {
   "id": "m5_washer",
   "item": "M5 washers",
   "short": "washer",
   "spec": "A2/A4; 15 mm (DIN 9021) or 18 mm (DIN 440) across where the list says so, otherwise DIN 125",
   "local": "ροδέλα M5 inox φαρδιά DIN 9021",
   "options": [
    {
     "shop": "Inox Store",
     "country": "GR",
     "url": "https://www.inoxstore.gr/product/rodeles-fardies-3xd-din-9021-inox-a2/",
     "title": "DIN 9021 wide washers, A2 stainless",
     "pack": "50 (pick Φ5 × 15 mm)",
     "price_eur": "3.20",
     "match": "exact",
     "note": "The 15 mm washers. In stock. No 18 mm (DIN 440) washer found."
    },
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/washer-m5-stainless-steel-100-pcs.html",
     "title": "Ροδέλα Μ5 Ανοξείδωτο Ατσάλι Α4 - 100 Τμχ.",
     "pack": "100 pcs",
     "price_eur": "1.80",
     "match": "close",
     "note": "A4, 5.3 × 10 mm (DIN 125); no 15 or 18 mm OD washer found."
    }
   ]
  },
  {
   "id": "m5_eye_bolt",
   "item": "M5 eye bolts",
   "short": "eye bolt",
   "spec": "DIN 444 type, A2/A4, M5 × 50; the eye 12–13 mm across",
   "local": "μπουλόνι με μάτι (κρικοβίδα) M5x50 inox DIN 444",
   "options": [
    {
     "shop": "Schraubenhandel24",
     "country": "DE",
     "url": "https://www.schraubenhandel24.de/schrauben/gewindeschrauben-din-444-augenschrauben-form-b-edelstahl-a2-m-5",
     "title": "DIN 444 eye bolts, form B, A2 stainless, M5",
     "pack": "10",
     "price_eur": "5.50 (for 40 mm)",
     "match": "exact",
     "note": "Pick the 50 mm length (the price shown is for 40 mm). A DIN 444 M5 eye is 12 mm across and 6 mm thick, which fits both latches."
    },
    {
     "shop": "Nanakis",
     "country": "GR",
     "url": "https://nanakis.gr/product/bido8hlia-strifwni-inox-5x50mm/",
     "title": "Stainless eye screw, A4, 5 × 50 mm",
     "pack": "1",
     "price_eur": "1.30",
     "match": "alternative",
     "note": "Greek shop in Chania, in stock. «Στριφώνι» usually means a wood-screw thread and the eye size isn't given: check it has an M5 machine thread before buying."
    }
   ]
  },
  {
   "id": "m5_coupling_nut",
   "item": "M5 hex standoff",
   "short": "standoff",
   "spec": "female both ends, 8 mm across flats, 15 mm long (or a DIN 6334 coupling nut); cross-drill it 4.2 mm",
   "local": "μακρύ παξιμάδι (μούφα) M5 DIN 6334",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/standoff-steel-m5-f-f-l15mm.html",
     "title": "Αποστάτης M5 Steel F/F (L15)",
     "pack": "per piece",
     "price_eur": "0.60",
     "match": "close",
     "note": "Steel hex standoff, 8 mm AF, 15 mm, threaded right through; not stainless."
    }
   ]
  },
  {
   "id": "pin_3mm",
   "item": "3 mm pin stock",
   "short": "3 mm pin",
   "spec": "steel shaft, cut to length",
   "local": "ατσάλινος άξονας 3 mm",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/precision-shaft-d3mm.html",
     "title": "Precision Shaft - D3mm",
     "pack": "50/100/200 mm",
     "price_eur": "0.65 (50 mm) / 1.30 (100 mm)",
     "match": "close",
     "note": "Not stainless; stainless 1/8 in alternative: [link](https://grobotronics.com/shaft-solid-stainless-1-8d-x-6l.html)"
    }
   ]
  },
  {
   "id": "pin_4mm",
   "item": "4 mm pin stock",
   "short": "4 mm pin",
   "spec": "steel shaft, cut to 8 and 14 mm pins",
   "local": "ατσάλινος άξονας 4 mm",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/precision-shaft-d4mm.html",
     "title": "Precision Shaft - D4mm",
     "pack": "50/100/200 mm",
     "price_eur": "0.65 (50 mm) / 1.30 (100 mm)",
     "match": "close",
     "note": "Chrome-plated hardened steel, not stainless."
    },
    {
     "shop": "mbo Oßwald",
     "country": "DE",
     "url": "https://www.mbo-osswald.de/shop/zylinderstift-din-en-iso-2338-4-m6-x-16-edelstahl-blank-oberflaechenrauheit-ra-0-8-m",
     "title": "ISO 2338 dowel pin 4 × 16 mm, stainless 1.4305",
     "pack": "",
     "price_eur": "",
     "match": "close",
     "note": "Stainless instead of plated steel; cut to 14 mm for the link pin. No price shown, and the shop may be for businesses."
    }
   ]
  },
  {
   "id": "rod_5mm_long",
   "item": "5 mm rod",
   "short": "5 mm rod",
   "spec": "300 mm, for the two multi-point rods",
   "local": "ατσάλινος άξονας 5 mm",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/precision-shaft-d5mm.html",
     "title": "Precision Shaft - D5mm (300 mm)",
     "pack": "per piece",
     "price_eur": "3.90",
     "match": "alternative",
     "note": "Hardened chrome-plated steel, not stainless."
    }
   ]
  },
  {
   "id": "wire_3mm",
   "item": "3 mm stainless wire",
   "short": "wire",
   "spec": "bendable; spring temper is better",
   "local": "σύρμα inox 3 mm (ελατηρίου)",
   "options": [
    {
     "shop": "Gutekunst",
     "country": "DE",
     "url": "https://www.federnshop.com/en/products/steel-wire-bars/23640.html",
     "title": "Spring wire bar, 1.4310 stainless, 3 mm × 1000 mm",
     "pack": "1",
     "price_eur": "15.25",
     "match": "exact",
     "note": "Spring-temper stainless, straight. €6.73 each from 5. Greek wire makers only sell 304 in coils."
    },
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/shaft-solid-stainless-1-8d-x-10l.html",
     "title": "Shaft - Solid (Stainless; 1/8\"D x 10\"L)",
     "pack": "per piece",
     "price_eur": "1.60",
     "match": "alternative",
     "note": "3.175 × 254 mm stainless rod, probably not spring temper."
    }
   ]
  },
  {
   "id": "disc_spring_m5",
   "item": "Disc springs for M5",
   "short": "disc springs",
   "spec": "DIN 2093, 10 × 5.2 mm, stainless",
   "local": "δισκοειδές ελατήριο (ροδέλα Belleville) DIN 2093 10x5.2 inox",
   "options": [
    {
     "shop": "RVS Edelstahl",
     "country": "DE",
     "url": "https://www.rvsedelstahl.de/tellerfedern-din-2093-14310-10x52x04-200-stuck/",
     "title": "DIN 2093 disc springs 10 × 5.2 × 0.4 mm, stainless 1.4310",
     "pack": "200",
     "price_eur": "6.17",
     "match": "exact",
     "note": "The 0.4 mm springs the assembly guides assume; 200 is enough for every latch. Free shipping over €100."
    },
    {
     "shop": "RVS Edelstahl",
     "country": "DE",
     "url": "https://www.rvsedelstahl.de/tellerfedern-din-2093-14310-10x52x05-200-stuck/",
     "title": "DIN 2093 disc springs 10 × 5.2 × 0.5 mm, stainless 1.4310",
     "pack": "200",
     "price_eur": "6.46",
     "match": "exact",
     "note": "The 0.5 mm ones: stiffer, with a little less travel."
    }
   ]
  },
  {
   "id": "disc_spring_m3",
   "item": "Disc springs for M3",
   "short": "disc springs",
   "spec": "DIN 2093, 8 × 3.2 mm, stainless",
   "local": "δισκοειδές ελατήριο (ροδέλα Belleville) DIN 2093 8x3.2 inox",
   "options": [
    {
     "shop": "RVS Edelstahl",
     "country": "DE",
     "url": "https://www.rvsedelstahl.de/tellerfedern-din-2093-14310-8x32x05-200-stuck/",
     "title": "DIN 2093 disc springs 8 × 3.2 × 0.5 mm, stainless 1.4310",
     "pack": "200",
     "price_eur": "8.46",
     "match": "close",
     "note": "Stainless, but 0.5 mm thick: stiffer than the 0.3 or 0.4 mm springs the latch is drawn for. The shop's 0.3 and 0.4 mm pages are gone."
    },
    {
     "shop": "BefestigungsFuchs",
     "country": "DE",
     "url": "https://www.befestigungsfuchs.de/1-tellerfeder-8x3-2x0-4-mm-din-2093-federstahl-blank",
     "title": "DIN 2093 disc spring 8 × 3.2 × 0.4 mm, spring steel",
     "pack": "1, or larger packs",
     "price_eur": "",
     "match": "alternative",
     "note": "The right size, but plain spring steel, so it will rust outdoors. The price didn't load."
    }
   ]
  },
  {
   "id": "compression_spring",
   "item": "Compression spring",
   "short": "spring",
   "spec": "ISO 10243 die spring for a 12.5 mm hole, 25 mm long, yellow (extra heavy, about 58 N/mm)",
   "local": "ελατήριο μήτρας ISO 10243 κίτρινο 12.5x25 mm",
   "options": [
    {
     "shop": "Berner & Straller",
     "country": "DE",
     "url": "https://berner-straller.de/produkt/schraubendruckfeder-iso10243-besonders-schwere-belast-d125-d163-lo25/",
     "title": "ISO 10243 die spring, extra heavy (yellow), 12.5 × 25 mm",
     "pack": "1",
     "price_eur": "3.51 + VAT",
     "match": "exact",
     "note": "The spring the carriage is drawn for: about 58 N/mm with 6.3 mm of travel at most (the figures for the same ISO size from another maker). The red version is softer and would clamp with less force."
    }
   ]
  },
  {
   "id": "o_ring",
   "item": "O-ring kit",
   "short": "O-ring",
   "spec": "NBR assortment: a small one that grips the captive M3 screw, and 10 × 2 mm for the multi-point shaft",
   "local": "σετ O-ring NBR",
   "options": [
    {
     "shop": "Grobotronics",
     "country": "GR",
     "url": "https://grobotronics.com/o-ring-nbr-assortment-kit-black-225pcs.html",
     "title": "O-ring NBR Assortment Kit Black - 225pcs",
     "pack": "225 pcs, 18 sizes",
     "price_eur": "7.90",
     "match": "close",
     "note": "18 sizes from 3 × 1 to 22 × 2 mm, including 10 × 2 (5 pieces)."
    }
   ]
  },
  {
   "id": "flat_bar_2mm",
   "item": "2 mm stainless strip",
   "short": "plate",
   "spec": "304, 15–20 mm wide, for the small pawls",
   "local": "λάμα inox 304 20x2 mm",
   "options": [
    {
     "shop": "Edelstahl-Lechner",
     "country": "DE",
     "url": "https://www.edelstahl-lechner-shop.de/20x2-mm-Flachstahl-1.4301-ungeschliffen/01212024301.6",
     "title": "Flat bar 20 × 2 mm, 1.4301 (304)",
     "pack": "cut to length, from 250 mm",
     "price_eur": "",
     "match": "exact",
     "note": "Pick the 250 mm length; the €28.08 shown is for a longer default length. 5–8 days."
    },
    {
     "shop": "Inox Store",
     "country": "GR",
     "url": "https://www.inoxstore.gr/product/lama-plake-inox-a2-enischymeni-25mm-pachos-a2-art778-100x20mm/",
     "title": "Stainless A2 flat plate, 100 × 20 mm",
     "pack": "1",
     "price_eur": "4.00",
     "match": "alternative",
     "note": "In stock. 2.5 mm thick, not 2 mm, and it may have screw holes: check the pawl still fits under the keeper before cutting."
    }
   ]
  },
  {
   "id": "butterfly_latch",
   "item": "Butterfly latch",
   "short": "latch",
   "spec": "stainless, about 22 mm wide",
   "local": "κλείστρο πεταλούδα inox",
   "options": [
    {
     "shop": "Amazon.de",
     "country": "DE",
     "url": "https://www.amazon.de/dp/B0DCDF9HSC",
     "title": "Butterfly twist latches with brackets, 304 stainless",
     "pack": "6, with 24 screws",
     "price_eur": "24.34",
     "match": "close",
     "note": "49 × 38 mm, about twice the 22 mm the printed hinge bracket is drawn for, so widen its ear gap and bore to suit. Free delivery to Greece."
    },
    {
     "shop": "PRIOstahl",
     "country": "DE",
     "url": "https://www.priostahl.de/377/spannverschluss/kistenverschluss-47mm",
     "title": "Small draw latch, V2A stainless, 55 mm",
     "pack": "1",
     "price_eur": "2.35",
     "match": "alternative",
     "note": "A toggle (draw) latch, not a butterfly latch."
    },
    {
     "shop": "Hellenic Blue",
     "country": "GR",
     "url": "https://www.hellenicblue.gr/kleistro-inox-koymp-64x29mm.html",
     "title": "Osculati stainless snap latch, 64 × 29 mm",
     "pack": "1",
     "price_eur": "5.17",
     "match": "alternative",
     "note": "Greek marine shop. A snap latch, not a butterfly or toggle latch, and the grade (304 or 316) isn't given."
    }
   ]
  },
  {
   "id": "band_clamp",
   "item": "Band clamp",
   "short": "clamp",
   "spec": "stainless, about 120 mm; a T-bolt clamp with a spring if you can get one",
   "local": "σφιγκτήρας T-bolt inox με ελατήριο 120 mm",
   "options": [
    {
     "shop": "Inox Store",
     "country": "GR",
     "url": "https://www.inoxstore.gr/product/sfigktiras-kolaroy-vareoy-typoy-inox-w4-norma-112-121mm/",
     "title": "NORMA heavy-duty clamp, W4 stainless, 112–121 mm",
     "pack": "1",
     "price_eur": "13.00",
     "match": "alternative",
     "note": "In stock. A 25 mm band; the page doesn't say it is a T-bolt clamp, and it has no spring."
    },
    {
     "shop": "Amazon.de",
     "country": "DE",
     "url": "https://www.amazon.de/dp/B0DTDST7DD",
     "title": "T-bolt clamp, 304 stainless, 110–120 mm",
     "pack": "1",
     "price_eur": "11.04",
     "match": "close",
     "note": "The right type, without the spring, but Amazon wouldn't send it to a Greek address. Use it to know what to ask for."
    },
    {
     "shop": "Mouser",
     "country": "GR",
     "url": "https://gr.mouser.com/en/ProductDetail/Molex/73430-0174?qs=AeBljyeJo%252BiaV42kWkPb2Q%3D%3D",
     "title": "Molex 73430-0174 Stainless Steel Hose Clamp 3\"-5\"",
     "pack": "1",
     "price_eur": "2.76",
     "match": "alternative",
     "note": "Stainless worm-drive, 76-127 mm; not a T-bolt or constant-tension clamp."
    }
   ]
  },
  {
   "id": "spring_plunger",
   "item": "Spring plunger (optional)",
   "short": "plunger",
   "spec": "M4, stainless",
   "local": "ελατηριωτό έμβολο με μπίλια M4 inox",
   "options": [
    {
     "shop": "Leschhorn",
     "country": "DE",
     "url": "https://www.leschhorn.de/de/ganter-615-m4-kn-edelstahl-druckstueck-mit-kugel-und-schlitz/10186278",
     "title": "Ganter GN 615 ball spring plunger, M4, stainless",
     "pack": "1",
     "price_eur": "2.40 + VAT",
     "match": "exact",
     "note": "Normal spring force, slotted. The shop looks aimed at businesses."
    },
    {
     "shop": "Würth Hellas",
     "country": "GR",
     "url": "https://eshop.wurth.gr/-/-/31103510220102.cyid/3110.cgid/el/GR/EUR/",
     "title": "Ball spring plunger, stainless",
     "pack": "",
     "price_eur": "",
     "match": "close",
     "note": "Trade customers only: log in, or ask at a Würth branch for the price. The sizes didn't show, so check M4 is there."
    }
   ]
  },
  {
   "id": "ptfe_washer",
   "item": "PTFE washer (optional)",
   "short": "PTFE washer",
   "spec": "PTFE or PE, 1–2 mm thick",
   "local": "ροδέλα τεφλόν (PTFE)",
   "options": [
    {
     "shop": "S-Polytec",
     "country": "DE",
     "url": "https://www.s-polytec.de/kunststoffplatten/ptfe-platten.html",
     "title": "PTFE sheet, cut to size",
     "pack": "cut to size, 1–20 mm thick",
     "price_eur": "57.82 per m²",
     "match": "alternative",
     "note": "Order a small 1 or 2 mm piece and cut the washers yourself with a knife and a hole punch."
    },
    {
     "shop": "Technische Kunststoffe 24",
     "country": "DE",
     "url": "https://technischekunststoffe24.de/scheiben/ptfe-scheiben/",
     "title": "PTFE discs, cut to size",
     "pack": "1–10 mm thick, from 20 mm across",
     "price_eur": "",
     "match": "close",
     "note": "Ready-cut 1 or 2 mm discs, but there is a €30 cutting fee per order and no centre hole is mentioned."
    },
    {
     "shop": "KMMB",
     "country": "GR",
     "url": "https://kmmb.gr/product/ptfe-g400/",
     "title": "PTFE sheet",
     "pack": "600 × 600 mm and up",
     "price_eur": "",
     "match": "alternative",
     "note": "Greek industrial supplier in Piraeus, price on request. Sheets start at 2.5 mm thick."
    }
   ]
  }
 ]
}