... 1.Load capacity: 20~25kg per caster 2.Wheel diameter:40~50mm3.Caster material: Rubber,pressed steel,zinc plated4.Chrome, ... 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 ...