Add to Wish List Quick view BAC #: UNIBIT Irwin Unibit Step Drill Bits In Stock IRWIN Single-fluted cutting edge assures true round holes, and allows greater control with less vibration. Ideal for drilling holes in thin metals such as mild steel, copper, brass, aluminum, plexiglass,... MSRP: Now: $32.09 - $134.21 Was: View Price Breaks MSRP: Now: $32.09 - $134.21 Was: Quick view Qty in Cart: 0 Price: MSRP: Now: $32.09 - $134.21 Was: Subtotal: