4Pcs Hinge Drill Bit Set, Self Centering Hinge Tap Core Drill Bit (5/64'' 7/64'' 9/64'' 11/64'')

DRILL BITS: The hinge drill bit is made of high-speed steel drill bit and a specially designed quenching treatment shell. Superior drilling performance, high hardness and durability, reducing your working time by more than half. Suitable for professionals and woodworking enthusiasts. GOOD MATERIAL: This hinge drill bit is made of brass with an electroplated surface. Quality materials ensure long service life, reliability, rust resistance, and wear resistance. The self-centering drill bit can make a clean and precise hole. Hard and strong enough. PRECISE TOOL: The adjustable design allows you to easily replace the drill. And its spring-loaded outer guide with chamfer head keeps the high-speed drill centered to create perfect pilot holes, they make aligning holes so much easier and you can get centered every time WIDE APPLICATION: The hinge bit is a standard drill bit with four sizes to meet your needs, it can provide a nice touch for wood projects or work in most quick disconnect adapters like tapping window or wood door, etc. The best choice to send a hinge drill bit as a gift for your father, brother or husband Specifications: 5/64": The hole diameter is about 2mm, use about 2.2-2.8mm tapping screw 7/64": The hole diameter is about 2.8mm, use about 3-3.5mm tapping screw 9/64": The hole diameter is about 3.5mm, use about 4-4.5mm tapping screw 11/64": The hole diameter is about 4.5mm, use about 5-5.5mm tapping screw