Professional Level Cobalt 8% HSS M42 Amber Finish Twist Drill Bit

Professional Level Cobalt 8% HSS M42 Amber Finish Twist Drill Bit 

1.  8% Cobalt HSS, (HSS Cobalt 8%)M42 Twist Drill Bit Set, fully ground flutes and  twist design for capability and durability. 

2. The parabolic flute form of the drill bits helps clear chips and debris away from the bit, decreasing friction and heat for a faster, cooler drilling process.

3. The fully ground  drill bits set for metal/tile/wood/plastic countersink. Especially for professional Use.

4. The hardness of the Cobalt 8% HSS M42 Twist Drill Bit  is 63-68HRC

5. The tip angle of the HSS Cobalt drill bits can either 188 degree DIN 338 standard or 135 degree with split American standard.