15-20-25-30-35 mm
45#CS
HRC58-52

Made of high carbon steel, hardened and tempered, sharp edge, high hardness, accurate positioning,smooth cutting,more smooth,less noise
The tridentate head design and scientific principles of carpentry cutting, it features a high drilling efficiency, and a smooth chip removal.Made of carbide, the hole is sharper, more durable and not easy to rust.
Adopting curved head design，the drill bits are efficient to drill and will make debris removed easily, no further cleanup of the edge required .
Drill precise flat bottom holes with no chipping in any thickness of soft wood.Perfect used for mounting spherical door shoot tip, drawer ; perforation on wood products , plastic products, wood and plywood etc.
It suitable for pistol drill, bench drill, vertical drilling machine hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine, etc.