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 or exceeds ASME PASE 2019 standards Capacity (Ton): 12 Minimum Height: 7.48" Maximum Height: 14.17" Extension Screw: 2.36" Base Length: 5.51" Base Width: 4.96"