Features Unique Chip Removal Design: The woodworking door hinge hinge drill adopts a unique chip removal design. The drill chips fall from the top of the drill hole, flow out from both sides of the drill hole, and automatically discharge, and the drill bit is not easy to be stuck. Self Centering Design: Woodworking door and window hinge hinge drill set adopts self-centering design, high positioning accuracy, will not shift when drilling, effectively improve work efficiency Preferred Material: Woodworking hinge hinge drill is made of high-quality high-speed steel material, with overall quenching treatment, high hardness, stable performance, not easy to wear, fast drilling speed, effectively improving work efficiency and saving time Replaceable Drill Bits: The center drill bit of the woodworking hinge drill set is replaceable, convenient and flexible to use, it is the best choice for DIYers and professionals Scope Of Application: The woodworking hinge hinge drill has a wide range of applications, and is very suitable for the drilling of hinges and hardware parts and the occasions where precise positioning of holes is required. Specification: Item Type: Hinge Hole Puncher Drill Bit Specification: 1 x 5/64 Inch: Hole diameter is about 2mm, use 2.2-2.8mm self tapping screws 1 x 7/64 Inch: Hole diameter is about 2.8mm, use 3-3.5mm self tapping screws 2 x 9/64 Inch: Hole diameter is about 3.5mm, use 4-4.5mm self tapping screws 1 x 11/64 Inch: Hole diameter is about 4.5mm, use 5-5.5mm self tapping screws 1 x 5mm: Hole diameter is 5mm, use 5.5-6mm self tapping screws 1 x 13/64 Inch: Hole diameter is about 5.2mm, use 6-6.5mm self tapping screws 1 x 1/4 Inch: Hole diameter is 6.35mm, use 7-7.5mm self tapping screws Package List: 8 x Hinge Hole Drill Bit 1 x Hex Wrench 1 x Center Punch Package List 8 x Hinge Hole Drill Bit 1 x Hex Wrench 1 x Center Punch