Self centering drill bit:
Color: silver
Material: Brass + high-speed steel
Appearance: Electroplating
Type: Core Drill Bit
Quantity: 7 pieces
Dimensions: 5/64 "，7/64"，9/64 "，11/64"，13/64 "，5 mm，1/4"
It is a set of professional drilling tools，applicable to the installation of the door hinge. Usage instruction.

Feature:
The 7/64" is good replacement for drilling holes in smaller hinges and hardware like decorative boxes.
The 9/64" is ideal replacement for medium to full size hinges and hardware.
The 11/64 is perfect replacement for door hinges，gate locks and all large hardware.
The bits are surrounded by spring loaded guides that have a window to show the drill bit depth while making adjustments. They come in the 3 most common hinge screw sizes 7/64",9/64"，11/64".

Automatic Center Punch
Quick and easy to use，it delivers an automatic spring-driven strike when it's pressed against a surface.
An adjustable cap allows you to regulate the striking force. The premium brass body has a deeply knurled nonslip surface replacement for sure handling and control.

Package Include:
1 x Automatic Center Punch
7X Center drill bit