We are now develop 3 kind of 50mm strengthen chair caster wheels,in current market most of 50mm twin wheels chair caster can only load 30kg. Our 2 inch chair caster can load 50kg.
　　The main material is Polyamide Hub and PU Tread.The mounting type can be thread stem,grip ring,insert stem.Our price are expensive than other regular furniture casters,but worth you pay for it.
　　As below photo display,the third caster is TPR tread,So it’s also used as medical furniture casters,such as hospital chair caster,noise reduced casters

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