8-Piece Center Drill Bit Set, with 5" Automatic Center Punch, Self Centering Hinge Hole Drilling 1/4" Hex Shank, 5/64''-1/4'' (Black Set)

Description- 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, don't stick drill.
• Come with an Automatic Center Punch. Marks workpiece with a dimple, creating a starting point that prevents screws and drills from wandering.

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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.

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Including- 5/64'': Hole diameter is about 2 mm,Use about 2.2 - 2.8 mm tapping screw

• 7/64'': Hole diameter is about 2.8 mm,Use about 3 - 3.5 mm tapping screw
• 9/64'': Hole diameter is about 3.5mm,Use about 4 - 4.5 mm tapping screw
• 11/64'': Hole diameter is about 4.5mm,Use about 5 - 5.5 mm tapping screw
• 1.97"/5mm: Hole diameter is about 5mm,Use about 5.5 - 6 mm tapping screw
• 13/64'': Hole diameter is about 5.2mm,Use about 6 - 6.5 mm tapping screw
• 1/4'': Hole diameter is about 6.35mm,Use about 7 - 7.5 mm tapping screw
• 1x Centre Punch: 5"