... tensile steel Q345B,welded by automatic Submerged-Arc processes500mm Height I beam, Top Flange 16mm,width 140mm; Middle Flange 6mm&8mm ; ... 13-pieces leaf spring,11x100mmKing PinOne unit of 2`` JOST standard assembly kingpinLanding GearTwo-speed ,manual operation, JOST D200 heavy ... POWAY ,24V 7-pin ISO standard1185 socket; two sets of standard rear light, turn light, rear reflector, side light, side ...