Size:
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
Use Method: Please appropriate adjustments according to the hardness of wood when opening,if wooden cottage,you can choose a smaller size,if hard wood,choose corresponding or a bigger size.
Package include: 4x Wood drill bit tools
