drill bits & sets
1 4 3 4 unibit stepdrill
1 4 3 4 unibit stepdrill new speedpoint tip provides 6x faster initial penetration time than before and eliminates the need for center punchingsingle fluted cutting edge assures true round holes and allows greater control with less vibrationideal for drilling holes in thin materials such as mild steel copper brass aluminum plexiglass wood and laminates cutting diam 1 4 in min 3 4 in max cutting edge material hssmaterial thickness 3 8 in max measurement type fractionalno . of steps 9packing type cardedshank diam 1 8 inwt . 0.19 lb
irwin unibit