Description The Viper Head’s rounded ‘fangs’ bounce off steel reinforcement rods, allowing the operator to switch to a rebar drilling system before any major damage is done to the drill bit. TriCarb grade tip guarantees longer life with faster penetration due to increased chiseling action. ThunderTwist flute design, combined with a copper brazing alloy creates the most reliable drill bit on the market. Vacuum heat treated, and shot-peened for superior strength under the roughest conditions. Usable Length Information For Bits 13″ Long, Usable Length is 7″ For Bits 15″ Long, Usable Length is 9″ For Bits 18″ Long, Usable Length is 12″ For Bits 23-1/2″ Long, Usable Length is 18″ For Bits 30″ Long, Usable Length is 24″ For Bits 36″ Long, Usable Length is 30″ For Bits 48″ Long, Usable Length is 42″
