Drill bit step 1/4 to 7/8in size 3/8x1in shank

Step drill bit comes with self-starting point eliminates starter holes or punches. Unique double-fluted design for balanced cuts and cooler operation. Exceptional titanium coating stands up to wood, plastic and metal- extends bit life compared to standard step bits. Double-fluted design for balanced cuts and cooler operation. 1 inch long shank. Unique titanium coating extends drill life six times longer than other step drills.