Designed to operate either manually or pneumatically, Air hose swivels any direction, Safety valve prevents overloading, 2-piece handle, Extension screw provides added height when necessary, Minimum air pressure required is 90 PSI / 6, 2 BAR, Capacity: 20 tons, Power lift: 16-1/2"", Closed height: 10-1/2"", Raised height: 20"", Additional screw adjustment: 3-1/2"", SKU: ISN11370