The Milwaukee? RED HELIX? 29-piece cobalt drill bit set is engineered for extreme durability and longer life in hard metal applications. The Milwaukee? cobalt drill bits are designed with a VARIABLE HELIX? that includes an aggressive 35 deg helix angle which ends at 15 deg. The drill bits have QUADEDGE TIP? to decrease heat build up and drill faster. The 135 deg split point tip delivers a precision start and prevents walking for fast, accurate holes in hard metal, PVC and wood. The tapered drill bits feature a new ENHANCED TAPERED WEB? that strengthens the bit's core to increase flute durability. The cobalt twist drill bits are ideal for tough applications, providing up to 15X life vs. black oxide Drill Bits?. This set includes 29 bits from 1/16 to 1/2 in.

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.

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.

The DeWALT? 14-piece Pilot Point? industrial cobalt drill bit set is designed for maximum speed and life in stainless steel and other hard metals. These bits features a pilot point and split point tip design that starts on contact and helping to reduce bit-walking for control. These bits are commonly used for drilling into stainless steel, angle iron, I-beams and other similar metals.

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.