Greenlee® 11-Ton Hydraulic Knockout Kit with Foot PumpApplication: Punches holes in mild steel, stainless steel, aluminum, brass, copper, fiberglass, and plastics.Hole Size: 0.89" - 2.42" (22.5 mm - 61.5 mm)Conduit Size: 1/2" - 2"Materials: Punches up to 10 ga mild steel or 12 ga stainless steelKit Includes: 746A Ram, 1725 Foot Pump, Slug-Buster® punches, conduit dies, hydraulic draw studs, carrying case SKU: GRNL.7606SB Brand: GREENLEE Country of Manufacture: United States Supplier Part Number: GRNL7606SB