{"product_id":"seiko-s-282-kojiake-gehauseoffner-fur-sprungboden-breite-klinge-8-mm-original-seiko-japan","title":"SEIKO S-282 Kojiake – Case Opener for Snap-On Case Backs, Wide Blade 8 mm | Original SEIKO Japan","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eOriginal SEIKO watchmaker's tool, imported directly from Japan – rarely available outside Japan.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe Kojiake (こじ開け, \"case opener\") is the classic Japanese tool for opening snap-on and press-fit case backs. The S-282 model from SEIKO's professional tool range features the series' wide blade with an 8 mm tip width, making it designed for large cases with wide opening notches – typically men's watches, sports models, and larger vintage cases. The wide blade distributes the leverage over a larger contact surface: the case back snaps off in a controlled manner, without the blade digging into the notch or jamming the case.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eA special feature of the SEIKO Kojiake: the blade is deliberately designed so that it can be re-sharpened by the watchmaker and adapted to the respective case – as is common practice in Japanese workshops. The tool thus grows with its tasks and, with good care, lasts a watchmaker's lifetime.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe series includes three blade widths: S-282 (8 mm, this offer), S-283 (5 mm), and S-284 (4 mm).\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat distinguishes this tool from European counterparts:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eEuropean case knives usually work with a short, knife-like edge that applies pressure at a single point. The SEIKO Kojiake, on the other hand, engages the opening notch with its full blade width – the design used to open snap-on case backs of Japanese watches (SEIKO, Citizen, Orient) ex-works. Especially with tightly fitting case backs of large cases, the 8 mm blade significantly reduces the risk of slipping and scratching compared to narrow universal knives. Additionally, the re-sharpenable blade: cheap openers with soft blades bend at the tip and must be replaced; the SEIKO Kojiake is re-sharpened instead. The original SEIKO tool range is not regularly distributed in Europe.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cbr\u003eTip width 8 mm\u003cbr\u003eReference: SEIKO S-282 (SE-S-282)\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e\u003cbr\u003eNew product, original packaging\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eNote\u003cbr\u003eImproper use of tools can damage watches. Use is at your own risk.\u003c\/p\u003e","brand":"Vintage \u0026 JDM (Japan Domestic Market)","offers":[{"title":"Default Title","offer_id":53924790829394,"sku":null,"price":24.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0911\/3908\/0530\/files\/568FE37D-F66F-4AA7-89E3-7C64CCAFD71A.jpg?v=1783391269","url":"https:\/\/japanese-microbrands.com\/en\/products\/seiko-s-282-kojiake-gehauseoffner-fur-sprungboden-breite-klinge-8-mm-original-seiko-japan","provider":"Japanese Microbrands - Mario Lenke","version":"1.0","type":"link"}