Product Details AFF 565F 22-ton axle jack features air assist operation and a self-retracting spring return. Its heavy- duty design is ideal for truck and trailer shops, rail and bus work, roadside service calls, and much more.  Specially engineered air motor delivers fast and efficient operation Long T-handle design allows easy access to vehicles with long overhangs Large 8” diameter rubber wheels provide effortless travel in the shop or roadside Fully welded hydraulic pump and cylinder delivers maximum strength and leak free operation Heavy-duty wiper seals protect the system from contaminants and ensures long service life Overload safety valve provides added operator safety