... castor: 1)Wheel: cast iron 2)Fork: cold-roller steel yoke 3)Loading capacity: 300kg,350kg,400kg,450kg castor:Wheel: ... cast ironFork: high grade cold-roller steel yokeLoading capacity ... 300kg,350kg,400kg,450kgWheel diameter: 100mm,125mm,160mm,200mmBearing: roller bearingSteel thickness: 4x3x4mmPlate: double ball racewaysFinish: Zinc-plated, ...