Greenlee® 11-Ton Hydraulic Knockout Kit with Hand 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"Material: Punches up to 10 ga mild steel or 12 ga stainless steelKit Includes: 746A Ram, 767 Hand Pump, Standard Round punches (1/2" - 2"), conduit dies (1/2" - 2"), hydraulic draw studs (7/16", 3/4"), carrying case SKU: GRNL.7306 Brand: GREENLEE Country of Manufacture: United States Supplier Part Number: GRNL7306