16" Extra-Long Flat Bits 16" Extra-Long Flat Bits •Patented micro-groove cutting edge and spurs produce a smoother hole finish•Double spur design scribes the hole before the chips are made, producing a cleaner hole and reducing vibration•Extra length provides added reach•Not for use with bit extensions•All extra-long flat bits are 16" long ITEM NO.DIA.(MM)Shank SizeWD887063/8"1/4" quick ...