Drill Bit Set includes 17 pieces, 1/16 - 3/8 in. 3-Flat shank, M35 steel with 5% polyvinyl butyral cobalt. Extra thick drill core adds further rigidity and strength.
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Drill Bit Set includes 21 pieces, 1/16 - 3/8 in . All sizes 3/16 in and larger have 3 flats on the shank so that the drill chuck gets a better grip on the drill bit.
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Constructed of M-42 8% cobalt high-speed steel for super abrasive resistance in tough metals. Bits have a 135 deg split point which reduces feed pressure for easier penetration. Includes (2) 1/16 in, (2) 5/64 in, 3/32 in, (2) 7/64 in, 1/8 in, (2) 9/64 in, 5/32 in, 3/16 in, 7/32 in, 1/4 in, 5/16 in, 3/8 in and (1) rubber-sided case with sliding latch for added security.
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