Features and Benefits: * Commonly used in pairs, these air-operated units are perfect for heavy-duty lifting jobs * Remote actuating valve and an 8 foot air hose give you control from a distance * Can be used as a support stand, as well as a lift, thanks to an innovative internal design * Wide range of height adjustment and durable, free-rolling wheels make the jack easy to maneuver and position where it"s needed * Capacity of 10 tons at 200 PSI air The minimum height (unpinned, no extension) is 19-1/2-inch and maximum height (pinned in top hole, with extension) is 49-1/4-inch with a 10-7/8-inch stroke.