ZELCAN Step Drill Bits, HSS 5PCS Titanium Step Drill Bit Set, 50 Sizes in 5 High Speed Steel Unibit Drill Bits Set for Sheet Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY Lovers

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About This Cobalt high speed steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come. Different sized shanks ensure compatibilit y with 1/4, 3/8 and 1/2 in. chuck sizes. Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. (the board must be smaller in thickness than the height of step drill bits). Please mark the spot that you are to drill for easier drilling and improved drill bits life. All the bits come in a well-organized case for easy transport and storage. Overview Cutting Diameter : 0.38 Inches Finish Type : Aluminum, Smooth, Steel, Titanium Shank Type : Straight Cutting Angle String : 135 Degrees Brand : ZELCAN Show more