The AFF 4-Ton Heavy Duty Floor Jack, No. 400SS, offers a twin hydraulic system for fast and efficient lifting. The jack features a heavy duty pump, ram and cylinders that are precision machined and inspected to help ensure long service life. Other features include high grade U-cup seals and high-pressure plunger, rear mounted swivel casters, universal joint technology, pinned and padded saddle, flanged side plates and integrated parts tray. This jack meets ASME 2014 standards.