Three-way heavy duty brass air valve provides fine control when lifting or lowering a vehicle Safety latch design provides six different automatic safety lock positions to prevent unintentional lowering of load Heavy duty wide base for stability and strength Two 6" front swivel caster wheels and two 12" diameter semi-pneumatic rear tires provide easy maneuvering Adjustable lifting arm can be extended to desired position100% Air operated provides a smooth and dependable lift with minimal maintenance. This product promotes safety with its six different automatic lock positions preventing unintentional lowering which could save an arm and a leg. The large pneumatic wheels enable easy maneuvering throughout the shop. You can expect quality and performance from Hein-Werner. Specs: capacity: 10 ton; minimum height: 12-1/2"; maximum height: 50-1/2"; power raise: 28"; saddle spread: 25" to 53"; minimum PSI for rated load: 200; distance: lifting to front of saddle: 13"; weight: 670 lbs. Made in the U.S.A.