rubber caster Features: 1) Dimensions: 200/50-100, 160/40-80, 125/37.5-50, 100/30-50, 80/25-45 2) Metal frame t rubber caster 1) Dimensions: 200/50-100, 160/40-80, 125/37.5-50, 100/30-50, 80/25-45 2) Metal frame thickness: 3mm3) Wheel: rubber tread (tire), metal centered hub, needle bearing4) Bearing capacity: 125 - 250kg5) Can't use in highwayPacking: Cartons