This is a set of countersink drill bit that is bore hole and chamfer 2 in 1, very professional and helpful in woodworking.

Features:
Including a .
Detachable and the length is adjustable.
Apply to the drilling machine that has collet or joint.
These countersink drill bits works in wood and wood chip.
It includes 4 sizes in countersink drill bit set(6#, 10#, 13#, 16#).
High steel drill and carbon steel countersink and chamfering machine.

Specifications:
Material: High steel+carbon steel
Shank Diameter: 6.35mm
Package Weight: Approx. 86g / 3.05oz
Package Size: Approx. 11 * 6.5 * 1.5cm / 4.33 * 2.56 * 0.59in

Package List: E1458
4 * Countersink Drill Bits
1 *