Speedbor, 15/32", titanium coated drill bit, with 3/8" reduced shank to fit in all 3/8" drills, lasts up to 10 times longer than standard HSS drill bits, 140 degree split point for less walking & quicker starts, cutting edge stays sharper longer & TiN coating reduces friction, 3 Flatted shank reduces slippage in chuck & extends battery life, application is for repetitive metal drilling with portable or stationary drill presses.