37/64" Cobalt Drill Bit with 3/8" Reduced Shank, D/ACO BoltsandNuts.com Tekton L-key sizes are marked

Tekton L-key sizes are marked in two ways: with a high-visibility laser marking and a stamped marking

Drill Size: U

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and 1/2 inch drive flex head ratchets have a 90-tooth gear that produces a working swing arc of 4 degrees

37/64" Cobalt Drill Bit with 3/8" Reduced Shank, D/ACO BoltsandNuts.com Tekton L-key sizes are markedProduct 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