The RPG 3.5-Ton Rocket Lift Service Jack has a single pump piston with a powerful Rocket Lift function that effortlessly raises the saddle to the contact point in just one pump for most vehicles, according to the company. The heavy duty chassis, along with the bolt-on reinforced and heavy duty lift arm axle, offers improved strength and durability. The service jack also features a patent-pending airbreather for pressure balance and optimum jack performance, as well as a universal joint mechanism and safety bypass system for cylinder protection. Other features include industrial grade casters, a sturdy, one-piece handle and protective saddle pad. This jack meets the 2014 ASME/PASE standard.