Knockout Punch Driver Set, For Use With Tool Type Mechanical Knockout Driver, Maximum Sheet Metal Capacity-Steel 10 ga, 12 ga, Includes Ratchet Yes, Material Application Stainless Steel, Steel, Slug Type Falls Free, Number of Punch/Dies Sets 15, Knockout Sizes Included 1/2 in, 3/4 in, 1 in, 1 1/4 in, 1 1/2 in, 2 in, Nominal Hole Size 7/8 in, 1 3/32 in, 1 11/32 in, 1 11/16 in, 1 15/16 in, 2 3/8 in, Punch Shape Circle