5/8" Cobalt Drill Bit with 1/2" Reduced Shank, D/ACO BoltsandNuts.com They have a 135° split

They have a 135° split point tip for fast penetration and accurate drilling and a round shank for use in a wide range of tool holding systems

Part Number DWRSRA9SS

Part Number: 75F450HCSSS

The underside of the lid has a grid pattern that makes contact with the dividers

Part Number: DUR1206-95

5/8" Cobalt Drill Bit with 1/2" Reduced Shank, D/ACO BoltsandNuts.com They have a 135° splitProduct 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. They have a 135 split point tip for fast penetration and accurate drilling. Compared to a conventional 118 degree tip, these drills wont go "walking" on you. Reduced Shank Drills