Our single-acting axle jacks are used worldwide for all normal axle jacking applications for both narrow and wide body aircraft. With 6- inch casters, these jacks are highly maneuverable and include both dual hand pumps and an air pump for ease of operation. Included is our exclusive EVAC-U-TRACT� cylinder retraction assist, making the single-acting jack cylinder function as a double-acting cylinder. This permits faster removal of the jack from under the aircraft, and with complete ram retraction the cylinder is better protected.