... or 75mm2.Loading capacity: from 20kg~~30kg3.Materials of caster: Plastic, hard rubber, cast iron, polyurethane, TPR are ... with international quality standard: ISO 9001:20082.Company:Flywheel Caster Manufacturing Ltd., established in 1981, which is located in ... high corrosion-resistance.Now it already has become a professional caster company which integrates design, manufacture, assemble, inspection and ...