{"product_id":"4-22mm-hex-shank-step-cone-drill-bit-hss-titanium-coated-hole-cutter","title":"4-22mm Hex Shank Step Cone Drill Bit HSS Titanium Coated Hole Cutter","description":"Specification: \u003cbr\u003e\nMaterial: High speed steel 4241; \u003cbr\u003e\nSize: 4-22 mm (10 Setps: 6,8,10,12,14,16,18,20 22mm); \u003cbr\u003e\nShank: 6mm(dia),25mm(L); \u003cbr\u003e\nTotal: 75mm(L). \u003cbr\u003e\n  \u003cbr\u003e\nFeatures: \u003cbr\u003e\n- The ladder of its unique structure, a bit can open a variety of specifications of aperture. \u003cbr\u003e\n- Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken. \u003cbr\u003e\n- Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them  was unable,but it is possible. \u003cbr\u003e\n- The use of tools: drill, bench drill.Work while water cooling, can effectively extend the service life of drill bit, recommend drilling rate of 250-250 RPM. \u003cbr\u003e\n  \u003cbr\u003e\nPackage Included: \u003cbr\u003e\n1 x Step Drill ","brand":"GreenZech","offers":[{"title":"Default Title","offer_id":42665141403818,"sku":"JG-DB1195644","price":11.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0280\/6179\/4375\/products\/42b79d90-69f1-4994-b6ae-f46c6df7168b.png?v=1646798970","url":"https:\/\/greenzech.com\/products\/4-22mm-hex-shank-step-cone-drill-bit-hss-titanium-coated-hole-cutter","provider":"GreenZech","version":"1.0","type":"link"}