Quickly obtains rated lift capacity of 44,000 lbs. with air-actuated operation. Handle top has metered-control release valve for easy height adjustment. Self-returning handle spring. 3 handle settings: 0A^? for access to lifting point, 45A^? for carrying load, 90A^? for storage. Lift of 10 inch. Min. height is 9 1/2 inch, max. is 19 1/2 inch. With extension screw. Manufactured by ISO-9002-certified factory to comply with the applicable American National Standard. Base is 22 7/8 inch L x 12 1/2 inch W. ..