Jobber Length Drill Bit Set – 550 Series, Cobalt High Speed Steel Material, 1/16 in Smallest Drill Bit Size, 1/2 in Largest Drill Bit Size, 135 ° Point Angle, 29 Pieces | 57850

57850 550 29PC HD COBALT DRILL SET Heavy-duty construction for drilling in tough, high-tensile, and work-hardening materials under extreme operating conditions Manufactured from premium 8% cobalt (M42) high-speed steel increasing hot hardness and extending drill wear life 135° P3 split point is self-centering for reduced thrust and easier penetration Manufactured to NAS 907 type J aerospace specifications