Irwin 88708 Spade Drill Bit, 1/2 In Dia, 16 In Oal, Flat Flute, 1/4 In Dia Shank, Hex Shank

Patented micro groove cutting edge and spurs produ Patented micro-groove cutting edge and spurs produce a smoother hole finishDouble spur design scribes the hole before the chips are made, producing a cleaner hole and reducing vibrationExtra length provides added reachNot for use with bit extensionsAll extra-long flat bits are 16 in. long1/4 in. quick change shank sizePouched1/2 in. diameter