Battery Knock Out Kit Voltage 18V DC For Maximum Stainless Steel Thickness 12 ga For Maximum Steel Thickness 12 ga Punching Capacity in Mild Steel 4 in Punching Capacity in Stainless Steel 2 in Dies Included Dies Included Battery Capacity 3 Ah Maximum Punching Pressure 7 ton Number of Batteries Included 0 Cordless Tool Kit Contents (1) Bare Tool (1) Carrying Case Brushless Motor No Charger Included Yes Power Source Hydraulic