Astro pneumatic 20 ton air/manual bottle jack – ast5302a the astro pneumatic tool 5302a 20 ton air/manual bottle jack is constructed with a heavy duty design perfect for high use professional automotive and industrial settings- it is fast and versatile with quicker hydraulic action than the competition and several times quicker than standard hand operated equipment- designed for manual or pneumatic operation and includes extension screws for added height when necessary- the air hose can swivel in any direction of connection from air source- it is built with a 2-piece long handle for pumping ease and features safety valve overload protection- specifications: capacity: 20t min height: 10-5/16 (262mm) max height: 19-15/16 (506mm) ram travel: 6-3 (160mm) screw adjustment: 3-5/16 (84mm) air pressure: 100-120psi n-w-: 34-72lbs (15-75kg) g-w-: 36-93lbs (16-75kg)