Product description
Material: high carbon steel
Shank diameter: 6.35mm (1/4 inch hex shank)
Surface treatment: blackening treatment
100% brand new and high quality.
1. Five Flute Chamfer Debur Countersink.
2. 5 Flute Counter Sinks.
3. Carpentry Countersink Drill Bit Set.
4. Suitable for all Woods and Soft Metals.
Heat treatment: high frequency quenching, enhance the hardness.
Applicable scope:suitable for wood plastic cutting chamfering etc.