Omega 18126C Black Hydraulic Bottle Jack with Return Springs - 12 Ton Capacity Equipped with external return springs A compact yet powerful air turbo motor US patent number: 5,341,723 is equipped to raise the load to the desired height efficiently, effortlessly, and safely Versatile quick connector design provides for easy removal of air hose from air motor allowing compact storage or remote operation Chrome plated ram for longer seal life and optimum performance US patent number: 5,946,912, a built-in bypass device protects hydraulic system from over pumping damage