Center Drill Bit Set, Snappy Drill Bit Guide Set 7PCs Hex Shank Self Centering Hinge Drill Bit for No6 Gauge Screws - 5/64" 7/64",9/64" 11/64", 5mm, 13/64"，1/4"

• Ideal carpenter tool for woodworking, installing hinges on wood doors, cabinet, window, etc
• Positioning accuracy, will not shift,the chips automatic discharge from either side of the top of the drill hole , don't stuck drill.
• The bits are surrounded by spring loaded guides that have a widow to show the drill bit depth while making adjustments.
• High hardness, rustproof, solid and durable.Fast replacement composite cone, uses drill edged principle.
• All shank size: 1/4",Hole Size: 5/64" 7/64",9/64" 11/64", 5mm, 13/64"，1/4"

Description Specifications: Material: High-Speed Steel All shank size: 1/4" Hole Size: 5/64" 7/64",9/64" 11/64", 5mm, 13/64"，1/4" They come in the 3 most common hinge screw sizes 7/64",9/64", & 11/64". The 7/64" is good for drilling holes in smaller hinges and hardware like decorative boxes. The 9/64" is ideal for medium to full size hinges and hardware. The 11/64 is perfect for door hinges, gate locks and all large hardware. 5/64 : Hole diameter is about 2mm, Use about 2.2 - 2.8mm tapping screw 7/64 : Hole diameter is about 2.8mm,Use about 3 - 3.5mm 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 5mm: Hole diameter is about 5mm, Use about 5.5-6mm tapping screw 13/64'': Hole diameter is about 5.2mm, Use about 6-6.5mm tapping screw 1/4'': Hole diameter is about 6.35mm, Use about 7-7.5mm tapping screw Package List: 1 x 7PCS Self-centering Drill Bits