Two piece zinc plated handle.; Prevent rust with “Parkerized” pump piston, ram and extension screw.; No leak “Uniweld” construction.; 50% safety overload factor.; State of the art design reduces repair time.; Longer wear life due to internally machined oil passages, smooth bearing surfaces and; close tolerances.; Lightweight forged base provides more steel only where strength is required.; The heavy-duty extension screw and release valve were designed to eliminate parts and reduce the chances of breakage and excessive wear.; Safety bypass and overload systems prevent cylinder damage and prevent the jack from being used beyond the ASME/PASE load-limiting standard.