29571 Type 130-D 1/2" Reduced Shank Silver & Deming Super High-Speed M42 Cobalt 135Â degree Split Point Drill Bit Set (9/16 - 1" by 16ths) 25mm ID Max PV Value: 50

Max PV Value: 50

and compound worm ratios ranging from 5:1 to 10

the tooth-contact area of helical gears is very small

• Body and clearance are gold surface treated for maximum lubricity

29571 Type 130-D 1/2" Reduced Shank Silver & Deming Super High-Speed M42 Cobalt 135Â degree Split Point Drill Bit Set (9/16 - 1" by 16ths) 25mm ID Max PV Value: 50Heavy 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