8 Piece Cobalt Drill Bit Set with Reduced 1/2" Shank, 9/16" - 1", DWDCO BoltsandNuts.com Length:3-1/2"

Length:3-1/2"

unlike chrome finishes

and a Reducer (3/4 to 1/2 inch drive)

This set includes an aluminum 4 mm bit driver and a high-torque 1/4 inch bit driver

Part Number: assortment-kit-536905 Pieces - Coarse Thread

8 Piece Cobalt Drill Bit Set with Reduced 1/2" Shank, 9/16" - 1", DWDCO BoltsandNuts.com Length:3-1/2"Product 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