Rebar Resistance: The Viper Head's rounded 'Fangs' bounce off steel reenforcement rods, allowing the operator to switch to our rebar drilling system before any major damage is done to the drill bit.

TriCarb carbide tip design combined with additional carbide bullets creates the Viper Head design which guarantees longer life and creates the Fastest Drilling Quad Design in the World! ThunderTwist flute design combined with the copper brazing alloy creates the most reliable drill bit on the market. Made with the highest quality American chrome-molybdenum-nickel steel available. Vacuum heat treated, and shot-peened for superior strength under the roughest applications.