... .Product specifications:1.Furniture casters,Load capacity: 20~25kg per caster 2.Wheel diameter:40~50mm3.Caster material: Rubber,pressed steel,zinc ... . Our wheel diameter is from 15mm to 300mm, materials include rubber, TPR, PU, plastic, nylon, cast iron, pneumatic, phenolic and ... , such as Euro type, American type, and the popular type. Casters are more than 50 series, 1000 types for customers’ choices ...