115 Piece Cobalt Jobber Length Drill Bit Set, 1/16" - 1/2" A - Z and #1-#60, D/ACO Series Quantity:1 They are made from M42

They are made from M42 8% cobalt and are manufactured to NAS 965 Type "D" specifications

Part Number: M12X50DPA2

is for turning round dies for making new threads or re-threading existing threads

These drill bits have a 1/2" reduce shank to expand the size range capacity of a portable drill chuck and has common flute and overall length for minimal adjustment during tool changes

Part Number: BIT-DWDCO7/16

115 Piece Cobalt Jobber Length Drill Bit Set, 1/16" - 1/2" A - Z and #1-#60, D/ACO Series Quantity:1 They are made from M42Product Description Cobalt drill bits are are effective in drilling tough, high tensile strength materials such as cast iron, inconel, stainless steel and titanium. They display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel. These drill bits are jobber (standard) length with a round shank for use in a wide range of tool holding systems. They have a 135 split point tip for fast penetration and