Drillpro 3Pcs 1/4 Inch Hex Shank HSS Blue-plated Step Drill Bit Set Spiral Groove Hole Cutter Tools 4-12/4-20/4-32mm

Description Drillpro 3Pcs 1 4 Inch Hex Shank HSS Blue plated Step Drill Bit Set Spiral Groove Hole Cutter Tools 4 12 4 20 4 32mmSpecifications Product NameStep Drill Bit SetBrandDrillproMaterialHigh Speed SteelCoatingNano Blue CoatingShankHexagonSize4 12mm 4 20mm 4 32mmLength4 12mm Length Approx 75mm 2 92 4 20mm Length Approx 73mm 2 90 4 32mm Length Approx 102mm 4 05 Quantity3 Pcs Step Drill BitSizeStep4 12mm 9 Step 4mm 5mm 6mm 7mm 8mm 9mm 10mm 11mm 12mm4 20mm9 Step 4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm4 32mm15 Step 4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm 22mm 24mm 26mm 28mm 30mm 32mmFeatures Unique step structure a single drill bit can drill holes in multiple different sizes Compared with ordinary twist drill bits these pagoda drill bits are not easy to break off effectively saving use cost This drill bit makes it possible to achieve deburring chamfering hole expansion and other functions that twist drill bit cannot complite High speed steel construction can extend the life of the cutting edge even under extreme temperatures Blue coating enhances drill bits resistance to heat corrosion and rust Suitable for workpieces with hardness below 25° such as iron plate aluminum plate PV plate insulation board etc Package Included 1 Pc 4 12mm 9 Step Step Drill Bit1 Pc 4 20mm 9 Step Step Drill Bit1 Pc 4 32mm 15 Step Step Drill BitMore Details