Product description Drill Screwdriver Bits 7pcs Center Drill Bit Doors Self Centering Hinge Tapper Hole Puncher Wood Tools 7pcs Center Drill Bit Doors Self Centering Hinge Tapper Hole Puncher Wood Tools product Selling Point: the Shank Of The Stainless Steel Drill Is 1/4 Inch.suitable For The Wood Window Or Door Tapping. Fast Replacement Composite Cone, Uses Drill Edged Principle. Drilling And Tapping, High Working Efficiency. High Hardness, Rustproof, Solid And Durable. Positioning Accuracy, Will Not Shift, The Chips Automatic Discharge From Either Side Of The Top Of The Drill Hole, Dont Stick Drill. usage Instruction: Please Adjust According To The Hardness Of The Wood, If The Wood Is Soft, Choose A Smaller Size; if The Wood Is Hard, You Can Choose A Larger Size Or Corresponding Opening Tool. Accurate Drilling Exact Pilot Holes In Cabinet Door Hinges, Door Butts, Handles, Drawer Slides, And More. Specification: Material: High-speed Steel Hole 7pcs Sizes: 5/64, 7/64,9/64,11/64, 5mm, 13/64, 1/4 Appearance: Electroplating Type: Center Drill Bit package Includes: 7 X Hinge Hardware Drill 1 X Spanner Size and color and quality Note: According to the color you choose, if there is no color, we choose according to the first picture. The size and dimensions are subject to your choice, if there is no option, we follow the title.