{"product_id":"size-7-american-clock-key-mainspring-winding-repai","title":"Size 7 American Clock Key Mainspring Winding Repair Tool With 4mm Hole For Clocks, Durable And Handy Replacement Winder Key For Hobbyists And Pros, Easy Fit For Old And Modern Timepieces","description":"\u003cdiv\u003eSize 7 clock winding key for mainspring repair\u003cbr\u003e ✔️ Size 7 single-end clock key with 4.00 mm hole for precise winding \u003cp\u003eThis single-end clock key, size 7, is a handy replacement tool for winding clock mainsprings in both vintage and modern timepieces. The 4.00 mm hole ensures a snug fit on compatible winding arbors.\u003c\/p\u003e \u003cp\u003e✅ Size 7 single-end clock key for mainspring winding\u003cbr\u003e✅ Hole size 4.00 mm for secure engagement\u003cbr\u003e✅ Fits old and modern timepieces\u003cbr\u003e✅ Durable, handy replacement for hobbyists and pros\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a clock mainspring winding key used for in maintenance and repair, and why choose a size 7 with a 4 mm hole?\nThis handy tool helps you wind the mainspring safely and efficiently.\n- Size 7 single-end design for broad compatibility\n- 4.00 mm hole ensures snug engagement with wind arbors\n- Works with vintage and modern timepieces\n- Durable construction for daily use by hobbyists and professionals\u003c\/p\u003e✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48966938460395,"sku":"VXB000OVJXVM","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61d07LlsX0L.jpg?v=1782933434","url":"https:\/\/vxb.com\/products\/size-7-american-clock-key-mainspring-winding-repai","provider":"VXB Bearings","version":"1.0","type":"link"}