Mechanical Machinery Jacks are good for repairing the vehicles, lifting the trucks, railway maintenance, construction, mining industry as well as agriculture. Compact design with collapsible lever offers easy operation and simple maintenance. A self locking, anti-kickback operating lever reduces injuries. Standard features include: folding handle, two carrying handles and a large base plate. Lifting and lowering speed is controllable. No seals to leak. Will not drift down even after an extended period of time.