Specification:
Material: High speed steel+carbon steel
Hex Shank Diameter: 6.35mm
Size:#5/#6/#8/#10/#12

Features:
Including a mini hex wrench.
Detachable and the length is adjustable.
Apply to the drilling machine that has collet or joint.
These countersink drill bits works great in wood and wood chip.
High speed steel drill and carbon steel countersink and chamfering machine.

Note:
-Size for manual measurement, there may be a 0 to 3 mm error, belongs to the normal phenomenon.
-The item is sharp enough,please get away from children.
-Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!!

Package Included:
5 * Countersink Drill Bits
1 * Hex Key