78 12 Step Drill Bit

Diablo, 78, Step Drill Bit, 12 Steps, 38 To 78, Impact, Fast, Accurate Cuts Increased Stability In Thin Metals, PVC, Other Plastic Materials, Innovative Split Point Tip Design Enables Fast, On Point Start Resulting In Increased Durability Up To 4X Longer Life, Precision Grinding Process On Each Step Reduces Wear Delivers 2X Faster Cut, Designed With 14 Hex Shank, Can Be Used With Drills Impact Drivers, Split Point Tip 132 Degree, Corded Cordless Tool Efficiency In High Speed Mode For Up To 75 Percent More Holes Per Battery Charge