Specifications:
Type: Hinge Drill Bit Set
Material: High Speed Steel (HSS)
Hex Shank Diameter: 6.35 mm / ¼ inch
For hinge drilling in: Wood and plastic
Hole Size:
5/64 '': Hole diameter is about 2mm, fit for tapping screw size: about 2.2-2.8mm
7/64 '': Hole diameter is about 2.8mm, fit for tapping screw size: about 3-3.5mm
9/64 '': Hole diameter is about 3.5mm, fit for tapping screw size about 4-4.5mm
11/64 '': Hole diameter is about 4.5mm, fit for tapping screw size about 5-5.5mm

Feature:
●Adjustable drill depth, remove drill for easy replacement.
●Standard 1/4” hex shank fits all power tool bit and quick-change chucks.
●Highly accurate bits are used for drilling exact pilot holes in cabinet door hinges, handles, drawer slides and other hardware.
●Spring loaded outer guide with chamfer head keeps the high-speed drill centered for perfect pilot holes, making it easy to drill precise holes.
● Widely Used:
5/64", 7/64" is good for drilling holes in smaller hinges and hardware like decorative boxes.
9/64'' ideal for medium to full size hinges and hardware.
11/64'' is perfect for door hinges, gate Locks and all large hardware.

Package Contents:
1 * 5/64" Self Centering Hinge Drill Bits
1 * 7/64" Self Centering Hinge Drill Bits
1 * 9/64" Self Centering Hinge Drill Bits
1 * 11/64" Self Centering Hinge Drill Bits

★★Tips★★
Please select the drill according to the hardness of the wood.
If the wood is soft, please choose a smaller size, but if the wood is hard, you can select a larger size.