FeaturesEfficient - up to 10X faster drilling than flat boring bitsFast chip removal - non-stick, polished and coated flutes eliminate costly cleaning timeClean holes - double wing spurs permit cleaner hole cuttingVersatile - 1/4 in power groove shank fits all 1/4 in extensionsFor use with 0726-22, 2603-22, 2604-22CT, 2604-22, 2601-22, 2602-22 hammer drillBack tapered flute offers low drag and excellent chip ejection