KING DO WAY 4 Pcs HSS Self Centering Door Hinge Twist Wood Drill Bits 5/64''7/64''9/64''11/64''

Features:
Quick change bit system for fast, one-handed load and release.
Avoid splitting out hardwoods by pre-drilling your screw holes.
These self centering drill bits put hinges right where they should be in the center.
4 of the most often used sizes for carpenters,cabinet,furniture makers and other wood working trades.
Easy to use and install.
Positioning accuracy,will not shift,the chips will automatic discharge from the hole on either side of the top of the drill,not stuck drill.

Specifications:
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.

Package include:4 x Wood drill bit tools

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.