The AFF single stage axle jacks feature a specially engineered air motor for easy lifting and a self-retracting spring return. Its heavy-duty design is ideal for truck and trailer shops, rail and bus work, and roadside service calls. Specially engineered high-speed air motor delivers fast and efficient operation. Compact and low-profile design allows maximum access and easily fits between wheels of tandem axle vehicles. Fully welded hydraulic pump and cylinder construction provide increased strength and leak free operation. Large all-terrain rubber wheels provide effortless travel in the shop or on the road. Extra-long handle locks in 3 different positions from 90-180 degree for easy positioning. Chrome plated ram offers additional rust and corrosion resistance. Heavy-duty wiper seals protect hydraulic system from contaminants. Overload and bypass safety valve prevent the jack from being used beyond its rated capacity.