Knockout Punch Driver Set For Use With Tool Type Mechanical Knockout Driver Maximum Sheet Metal Capacity-Steel 10 ga 12 ga Includes Ratchet No Material Application Stainless Steel Steel Slug Type Falls Free Number of Punch/Dies Sets 4 Knockout Sizes Included 1/2 in 3/4 in 1 in 1 1/4 in Nominal Hole Size 7/8 in 1 3/32 in 1 11/32 in 1 11/16 in Punch Shape Circle