New Knockout Tool Set ½", ¾", 1", and 1 ¼" Punch dies For Metal Hole's & Conduit * 2 Ball Bearing Drive Bolts * 1/2", 3/4", 1" and 1-1/4" Dies * 7/8", 1-3/32", 1-11/32" and 1-11/16" Hole Punches * Includes Carry / Storage Case * High Carbon Steel Screws and Alloy Steel Punches for Long Tool Life * Durable, Sturdy design cuts Smooth, Clean and Accurate holes * Punch conduit holes in up to 10 gauge mild steel, aluminum, fiberglass and plastic * The Drive Bolt on these punches can safely be turned with a Wrench, Ratchet or Drill. * Ideal Knockout Punch Tool Set for Construction, Industrial, Manufacturing, Home and Auto