Black Bull HBJ4 4 Ton Multi-Purpose Hydraulic Jack Easily lift heavy loads weighting up to 8,000 pounds, reliable and portable design Great for use on the shop, farm, or job site Cleated non-slip lift cap, adjustable extension screw cap, replaceable pump cartridge Solid cast iron base for maximum stability, base dimensions: 3 7/8 inches x 3 1/2 inches Hydraulic bypass prevents ram over travel; lift height 7.75 to 12.75 inches; weights 6.7 pounds