{"product_id":"r8-round-collet-mill-chuck-holder-20mm-precision-c","title":"R8 Round Collet Mill Chuck Holder 20mm Precision CNC Engraving Lathe Tool Pro Grade With 7 16 UNF Thread And 0.015mm Accuracy High Clamping Strength Durable Silver Finish","description":"\u003cdiv\u003eHigh-Precision 20mm R8 Collet Mill Chuck Holder for CNC\u003cbr\u003e\n✔️ Pack: 1 Pcs; Clamping: 20 mm (25\/32 in); 7\/16-20UNC; 0.015 mm \u003cp\u003eThis high-precision R8 round collet mill chuck holder is designed for CNC engraving machines, milling machines, and lathes. It securely holds end mills, drills, engraving bits at the spindle nose with a stable clamping force, enhancing accuracy and tool life during detailed engraving work.\u003c\/p\u003e ✅ Size and specs: 20 mm (25\/32 in) clamping diameter, max OD 32 mm (1.26 in), length 104 mm (4.09 in) 0.015 mm accuracy \u003cbr\u003e\n✅ Material and hardness: 45# carbon steel, hardened to HRC40-50 \u003cbr\u003e\n✅ Clamping system: 1:8 taper, precision ground and polished for smooth operation \u003cbr\u003e\n✅ Tail thread: 7\/16-20UNC, holds tools securely on CNC spindle \u003cbr\u003e\n \u003cp\u003e💡 What is an R8 round collet chuck holder used for in CNC machines? This handy accessory secures rotary tools during engraving, milling, and drilling.\u003c\/p\u003e - Holds end mills and drills securely\u003cbr\u003e\n- Minimizes runout for precise cuts\u003cbr\u003e\n- Easy installation with a strong clamping force\u003cbr\u003e\n- Compatible with 7\/16-20UNC tail thread✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49073686970603,"sku":"VXB0GWJ2N618","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61j0o6g6M2L.jpg?v=1784429661","url":"https:\/\/vxb.com\/products\/r8-round-collet-mill-chuck-holder-20mm-precision-c","provider":"VXB Bearings","version":"1.0","type":"link"}