Shockwave, 15/64", Impact Duty, Titanium, Drill Bits With Red Helix Are Engineered For Impacts & Drills, Designed With A Variable Helix With An Aggressive 35 Degree Helix Angle Which Ends At 15 Degrees, The Impact Duty Titanium Drill Bits With Red Helix Provide Rapid Chip Removal To Limit Heat Buildup To Stay Sharper Longer, The 135 Degree Split Point Tip Delivers A Precision Start & Prevents Walking For Fast, Accurate Holes, Titanium Coating Can Be Used In All Drilling Applications To Give You Up To 3 Times Life Versus Black Oxide Drill Bits.