17 Pieces Doors Self Centering Hinge Tapper Core Drill Bit Set

Drill bit size:
There are 8 sizes of hinge drill bits, 5/64”, 7/64”, 9/64”, 9/64”, 11/64”, 5”, 13/ 64′ ‘, 1/ 4”, can meet your needs.
Comes with 8 types of core twist drill bits and 1 black wrench

The perfect tool:
The positioning is accurate and does not shift. The sawdust automatically pops out of the holes on both sides of the drill bit, and the drill does not get stuck. It is a must-have choice for professionals and DIYers.

Durable drill bit:
The drill bit is designed with high speed steel bit and quenched casing. The drilling depth is adjustable, high hardness, corrosion-resistant, durable, and has excellent drilling performance.

Excellent design:
The center drill kit has a self-centering function that reduces drill bit travel and improves accuracy and efficiency when drilling. Double-sided opening design: quickly and automatically cut rows from the holes on both sides, eliminating the need for drilling and locking.

widely used:
A reverse drill bit is a standard drill bit that comes in a variety of sizes to suit your needs and can be a good choice for wood projects or for working on most quick disconnect adapters such as wood windows or faucet doors etc.

Detailed tips:
When opening the hole, please adjust it appropriately according to the hardness of the wood. If the wood is soft, you can choose a smaller size. If the wood is hard, you can choose a corresponding or larger size.
5/64”: The opening diameter is about 2mm, use self-tapping screws of about 2.2-2.8mm.
7/64”: The opening diameter is about 2.8mm, use self-tapping screws of about 3-3.5mm.
9/64”: The opening diameter is about 3.5mm, use self-tapping screws of about 4-4.5mm.
11/64”: The opening diameter is about 4.5mm, use self-tapping screws of about 5-5.5mm.
5”: The opening diameter is about 5mm, use self-tapping screws of about 5.5-6mm.
13/64”: The opening diameter is about 5.1mm, use self-tapping screws of about 5.6-6.1mm.
1/4”: The opening diameter is about 6.3mm, use self-tapping screws of about 6.8-7.3mm.

What’s in the box
8 x Hinge Drill Bit
8 x Replacement Twist Drill Bits
1 x Black Wrench