Constructed of high-grade steel and built to exacting standards for quality and durability. Single piece self-locking multi-position forged iron ratchet bar provides precise adjustments. Large saddle surface area provides better contact with the load being supported. Dimensions of 7 11/16'' x 6 7/8'' (19.5 cm x 17.5 cm) foot base size. Capacity of 3 tons (6 000 lbs).