Black&Decker BEH850K

The Milwaukee Red Helix Cobalt 1/8 in. Drill Bit are engineered for extreme durability and longer life in hard metal applications. The Milwaukee Cobalt drill bits are designed with a Variable Helix th more→at includes an aggressive 35 degree Helix Angle which ends at 15 degree. The 135 degree split point tip delivers a precision start and prevents walking for fast, accurate holes in hard metals, 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 brill bits

IRWIN General Purpose High Speed Steel Bit is constructed of M-2 high speed steel for the best combination of strength, heat resistance, and wear resistance

Milwaukee Shockwave impact duty titanium drill bit set with Red Helix are engineered for impacts and drills. Designed with a variable Helix that with an aggressive 35 degree cutting edge which ends at more→15 degree. The quad edge tip delivers a precision start and four cutting edges to create smaller chips. The 135 degree split point tip delivers a precision start and prevents walking for fast, accurate holes.