39/64" Cobalt Drill Bit with 1/2" Reduced Shank, D/ACO BoltsandNuts.com The set includes a twist-to-lock

The set includes a twist-to-lock socket rail that keeps the sockets securely organized

Part Number DWDDL12X37/64

Part Number: Assortment Kit #3851921 Pieces

240 Pieces

Part Number DWCF12A

39/64" Cobalt Drill Bit with 1/2" Reduced Shank, D/ACO BoltsandNuts.com The set includes a twist-to-lockProduct 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