Cordless Knockout Tool, Battery Included, Voltage 18V, Max. Operating Force 10 tons, Max. Capacity Mild Steel 10 ga., Max. Capacity Stainless Steel 12 ga., Battery Included (2) 2PYZ8, Battery Pack Replacement 2PYZ8, Battery Type Li-Ion, Battery Capacity 18V, MILWAUKEE P/N 2676-23