Welded design for greater strength and eliminates leaks. Chrome plated piston and ram for increased rust resistance and durability. Extension screw for height adjustment. Overload bypass safety system prevents damage to jack. Meets ASME PALD-2014 and CE standards. 20 Ton capacity, minimum height 7.48 inches, maximum height 13.76 inches, extension screw 2.36 inches, base length 6.24 inches, base width 5.63 inches.