Century Drill & Tool 26220 Cobalt Drill Bit - 0.31 x 4.5 in.

Cobalt Drill Bit - 0.31 x 4.5 in.

Drill bits cobalt. Cobalt drills are designed to cut through extremely hard metals, including stainless steel. No center punch needed: Century 135 degree quick-cut points are self-centering and penetrate faster with less pressure, will not walk or wander at the starting surface. Extremely heat resistant, must be used and operated in power units that have a RPM speed of 1.500 or more for maximum efficiency. Aerospace NAS 90°-J specifications. 12X life rating, comparison to the average 118 degree point high speed steel drill.

• Dimension: 1 x 4 x 10 in.
• Cube: 40
• Size: 5/16-"
• Weight: 0.09 lbs