I HAVE A AIR FORCE, LOW PROFILE 5-TON -MULTI-PISTON, HYDRALIC JACK .IT DOES NEED T LC. SEAL LEAK, BUT DID HAVE IT WORKING LAST YEAR. { HOSE Counter sales} can usually match up seals once you remove or replace them for additional cost. they are at- 55 route 34, matawan, nj 07747 the top scews up for fast clearence, but then started leaking..nice heavy duty for equiptment, or truck