Specification:
Item Type: Hinge Drill Bit
Material: Aluminium Alloy and Iron
Size:
5/64in: hole diameter is about 2mm / 0.08in, use about 2.2-2.8mm/0.09-0.11in tapping screw
7/64in: hole diameter is about 2.8mm / 0.11in, use about 3-3.5mm/0.12-0.14in tapping screw
9/64in: hole diameter is about 3.5mm / 0.14in, use about 4-4.5mm/0.16-0.18in tapping screw x 2
11/64in: hole diameter is about 4.5mm / 0.18in, use about 5-5.5mm/0.2-0.22in tapping screw
13/64in: hole diameter is about 5.1mm / 0.20in, use about 5.6-6.1mm/0.22-0.24in tapping screw
1/4in: hole diameter is about 6.3mm / 0.25in, use about 6.8-7.3mm/0.27-0.29in tapping screw
(When opening the hole, please adjust it according to the hardness of the wood. If the wood is soft, you can choose the smaller one. If the wood is hard, you can choose the corresponding or the larger one. The wood chips will be automatically discharged from the holes on both sides of the drill, will not jam the drill bit, perfect punching effect.)

Package List:
8 x Hinge Drill Bit
1 x Hex Wrench