caster Fork: Zine plated, Hollow screw stem Wheel:cast iron, solid rubber, black Loading capacity:180-300kgs Dia.: ... Features:Fork:housing-welded and hollow screw stem,zinc-platedWheel: wheel center made of cast iron, tread:solid rubber, black,with grase ... nut is equipped.Cutomized specification is available.Optional wheels: PU wheel (PP core), PU mold on cast iron wheelModel: 1176 Adjustable ...