Draper 55375 (D20ID180)

The Milwaukee Red Helix Cobalt 7/16 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 t more→hat 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.

This DeWALT 40 piece FlexTorq IMPACT READY screwdriving bit set with small ToughCase+ system is a connectable case system designed to optimize storage space, while keeping bits organized. The patented more→bit-bar design facilitates for quick removal of bits and customizable placement. Clear lid assists user to see inside contents at a glance. This bit set delivers exceptional performance for extreme torque applications. The FlexTorq bits featuring an extended FlexTorq zone, aids to transfer optimal torque in hard joint applications thereby assures increased durability. The bit tip is CNC machined for a precise fit, thus minimizing cam-out under torque. The Magnetic Screw Lock sleeve minimizes drops …

While most screw driving bits are simply compatible with impact drills and drivers, Irwin Impact Performance Series fastener drive bits are engineered for maximum durability and long life with impact more→drivers. These bits are forged rather than milled, so they fit fasteners more precisely, which reduces stripping and increases the life of the bit itself - Irwin's Impact Performance Series bits have three times longer life than traditional bits.