Powerbuilt 20 Ton 18,000kg Air Hydraulic Shorty Bottle Jack Tap & Reamer Wrenches Precise and material matched sawing due innersole Precise and material matched sawing due to the variable stroke rate 1 4 x 1 4 (32 mm x 6 mm) integrated bypass and overload valves Fully polished and chrome cylinder rams enhanced with high performance seals added durability and longer life Fast and efficientair pump reduces lifting time and has a built in relief mechanism which prevents the jack from being used beyond its maximum allowable capacity Unique design allows for manual operation when air is not available Side carry handle Safety spring ram retention Screw extension for extra height Ram travel: 87mm