Specifications: 1) Dimensions and weight: A) nominal dimensions (l x w x h): 12, 250 x 2, 440 x 1, 450mm B) king pin height: 1, 200mm D) king pin: forged steel, 2" or 3.5", welded or bolt-in C) king pin setting: 1, 000mm from rear face of front bolster E) tare weight: 4, 400kg / 5, 500kg. 2) Running system: A) suspension system: leaf spring or airbag suspension B) axle: various axles like bpw, york and fuwa with various bearings C) tire: various brands of bias tires or radial tires D) max. Payload: 40, 000kg / 45, 000kg E) landing gear: 24t, 25t. 3) Chassis: A) provides 8 or 12 retractable type twist locks B) main beam: high-tensile steel C) surface preparation: shot blast D) painting: zinc-rich primer and modified urethane topcoat as customers' choices. 4) Brake system: A) double line air brake system with single air tank, standard connectors on front bolster. B) optional anti-lock brake system. 5) Electrical system: standard electrical equipment. 6) Accessories: A) tool box (box only). B) spare wheel holder (no spare tires and wheels).