Makita BHP458Z

"The Milwaukee Red Helix Cobalt 7/16"" 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 degrees Helix Angle which ends at 15 degrees. The 135 degrees 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 Speedbor MAX Speed Bits features three cutting spurs for faster, cleaner holes, less breakout, and extended drilling life

The Milwaukee Shockwave 1 in. Impact T15 Torx Bits are engineered to be the Most Durable, Best Fitting driver bits for the most demanding applications. The Wear Guard Tip delivers increased wear resis more→tance which protects the fit over the life of the bit. The Shockzone is optimized for each tip type and length of driver bit to absorb peak torque and prevent breaking. The Custom Alloy76 has a customized steel and heat treatment per tip type to extend the life of the driver bits, providing up to 5X life vs. competitive impact driver bits.