Step Drill Bit Set & Automatic Center Punch, 50 Sizes in 5 High Speed Steel Titanium Coated Double Sided Drill with Aluminum Case, for DIY Lovers

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About this product

Features: 1.Can replace 50 single drills and process 23 holes with diameters ranging from 18 inch to 1-38 inch 2.Package includes 5 step drills, 1 automatic center punch and 1 aluminum storage box 3.Made of high-speed steel with high hardness, high wear resistance, easily cut metal, plastic, wood 4.Titanium coating can reduce surface friction, sharper and corrosion resistant 5.Double edge and X-shaped opening design, cutting more smoothly 6.Double spiral grooves reduce cutting resistance and remove chips more smoothly 7.Triangular shank design prevents the bit from slipping, for a variety of models 8.Automatic center punch, easy to mark the punching position Warm Tips: 1. Please do not set drilling speed too high to avoid damages to cutting edge Specifications: Item name: Step drill bit set Material: High speed steel with titanium coating Color: Golden Package size: 6 × 5.2 × 1.8 in Package weight: 1.2lb Step Drill Bit Size: #1: 14 inch to 1-38 inch 10 steps (14 inch, 38 inch, 12 inch, 58 inch, 34 inch, 78 inch, 1 inch, 1-18 inch, 1-14 inch, 1-38 inch) #2: 316 inch to 78 inch 12 steps (316 inch, 14 inch, 516 inch, 38 inch, 716 inch, 12 inch, 916 inch, 58 inch, 1116 inch, 34 inch, 1316 inch, 78 inch) #3: 14 inch to 34 inch 9 steps (14 inch, 516 inch, 38 inch, 716 inch, 12 inch, 916 inch, 58 inch, 1116 inch, 34 inch) #4: 18 inch to 12 inch 13 steps (18 inch, 532 inch, 316 inch, 732 inch, 14 inch, 932 inch, 516 inch, 1132 inch, 38 inch, 1332 inch, 716 inch, 1532 inch, 12 inch) #5: 316 inch to 12 inch 6 steps (316 inch, 14 inch, 516 inch, 38 inch, 716 inch, 12 inch) Package list: 5 x Step drill bit 1 x Automatic center punch 1 x Storage box Our products have been well tested, you can rest assured that your purchase is assuredd. Any problems please feel free to contact us first.