Mechanical Suspension 1.Capacity: 2 x 10, 2 x 12, 2 x 13, 2 x 16 tons, 3 x 10, 3 x 12, 3 x 13, 3 x 16 tons. 2.OEM available. Mechanical Suspension for Semi-trailer.Capacity: 2 x 10, 2 x 12, 2 x 13, 2 x 16 tons, 3 x 10, 3 x 12, 3 x 13, 3 x 16 tons.Fabricated or casting type. Can be same design as FUWA, YTE, BPW, ROR, MERITOR.