{"product_id":"3pcs-hss-spiral-flute-step-drill-bit-triangle-shank-with-automatic-center-pin-punch-for-hole-drill","title":"3Pcs HSS Spiral Flute Step Drill Bit Triangle Shank With Automatic Center Pin Punch For Hole Drill","description":"Features: \u003cbr\u003e\nSpiral groove step drill bit. \u003cbr\u003e\n-Titanium coating reduces friction and heat. \u003cbr\u003e\n-Surface nitrogen treatment (increase hardness and wear resistance). \u003cbr\u003e\n-High-speed steel: Higher quality than ordinary twisted drilling, and durable. \u003cbr\u003e\n-Can work without coolant. \u003cbr\u003e\n-The unique step structure: the drill can drill a variety of sizes of the aperture. \u003cbr\u003e\nCenter Pin Punch \u003cbr\u003e\n-Simple and accurate to use knurled handle prevents slipping. \u003cbr\u003e\n-Spring pressure can be adjusted by simply rotating the knurled top of the punch. \u003cbr\u003e\n  \u003cbr\u003e\nSpecification: \u003cbr\u003e\nSpiral groove step drill bit:\u003cbr\u003e\nType:Step drill; \u003cbr\u003e\nMaterial:HSS; \u003cbr\u003e\nSurface treatment:Nitrogen treatment (increase hardness and wear resistance); \u003cbr\u003e\nShank shape:Triangular round handle; \u003cbr\u003e\nQuantity:\u003cbr\u003e\n1 Pc x 4-12mm Step Drill Bit; \u003cbr\u003e\n1 Pc x 4-20mm Step Drill Bit; \u003cbr\u003e\n1 Pc x 4-32mm Step Drill Bit; \u003cbr\u003e\nCenter Pin Punch:\u003cbr\u003e\nMaterial:Knurled steel body, alloy steel tip; \u003cbr\u003e\nColor:Black; \u003cbr\u003e\nTotal length:5 inch; \u003cbr\u003e\n \u003cbr\u003e\nPackage Included: \u003cbr\u003e\n1 Pc*4-12mm Step Drill Bit; \u003cbr\u003e\n1 Pc*4-20mm Step Drill Bit; \u003cbr\u003e\n1 Pc*4-32mm Step Drill Bit; \u003cbr\u003e\n1 Pc*Center Pin Punch; \u003cbr\u003e\n1 Pc*Cloth bag","brand":"GreenZech","offers":[{"title":"Default Title","offer_id":42665070756010,"sku":"JG-DB1827349","price":21.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0280\/6179\/4375\/products\/a74edb0a-5fc7-4353-bc10-851ce85e0b65.jpg?v=1646798252","url":"https:\/\/greenzech.com\/products\/3pcs-hss-spiral-flute-step-drill-bit-triangle-shank-with-automatic-center-pin-punch-for-hole-drill","provider":"GreenZech","version":"1.0","type":"link"}