29381 Type 130-D 1/2" Reduced Shank Silver & Deming Super High-Speed M42 Cobalt 135Â degree Split Point Drill Bit 3mm Step Down Adapters are ideal

Step Down Adapters are ideal for making the shaft smaller

Click here for spec sheet: NAPA Spec Sheet

shaft and key failures

This design allows for the driving pinion to rotate internal to the gear

065" 125 psi 28" Hg 2 1/2" PR516 5/16" 15/32"

29381 Type 130-D 1/2" Reduced Shank Silver & Deming Super High-Speed M42 Cobalt 135Â degree Split Point Drill Bit 3mm Step Down Adapters are idealHeavy duty 135 degree split point with gold finish for use in drilling hard tough metals, free machining stainless steel, high temperature alloys, titanium and certain plastics. High red hot hardness of cobalt steel permits speeds 30% higher than regular high speed steel drills. Cobalt drills require rigidly held, positive feed drilling equipment. Click Here for product catalog Proudly Manufactured in the U. S. A