Replaces the cap on your  Ram square, direct-weld, sidewind jack with a 10,000-lb or 12,000-lb lift capacity. Features: Replaces a lost or damaged cap from your Ram square, direct-weld, sidewind jack with a 10,000-lb or 12,000-lb lift capacity Fits a 4″ x 4″ outer jack tube Quantity: (1) End Cap