Diablo 3/8 In. - 7/8 In. Impact Step Drill Bit, 12 Steps

Split Point Tip (132) makes pre-drilling obsolete and stays sharper longer Automated Precision CNC Grinding Process delivers strict angle tolerances on each step for minimal bit wear Exclusive design delivers corded and cordless tool efficiency in high-speed mode 1/4 In. hex shank allows use with drills and impact drivers Optimized dual flute design for jam-free cuts,Increased step heights for easier drilling of common hole sizes Easy to read, laser marked steps for drilling holes of varying sizes Ideal for electrical, plumbing and HVAC contractors