Item Description:7Pcs Center Drill Bit Doors Self Centering HingeTapper Hole Puncher Wood ToolsProductTheShank of the stainless steel drill is 1/4'' inch.Suitable for the woodwindow 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 fromeither side of the top of the drill hole, don't stick drill.Usageinstruction:Please adjust according to the hardness of the wood, if the wood is soft,choose a smaller size;Ifthe wood is hard, you can choose a larger size or corresponding openingtool.Accurate drilling exact pilot holes in cabinet door hinges, door butts,handles, drawer slides, and more.Specification:Material: high-speed steel Hole7pcs Sizes: 5/64", 7/64",9/64",11/64", 5mm, 13/64", 1/4"Appearance: ElectroplatingType: center Drill BitPackageincludes:7 x Hinge Hardware Drill1 x spannerItem Specification:DIY Supplies: MetalworkingBarrel Length: /is_customized: YesMaterial: high-speed steel HoleSide Panel Thickness: as show