Soft and Eco-Friendly Thermoplastic rubber TPR caster wheels locks with 4" 5" 6" and 8" , Double welding housing brings 507lbs to 705lbs load capacity. Rubber and Nylon caster wheels material is workable.
Polypropylene caster wheels are lightweight, non-marking wheels impervious to water with good chemical resistance
Long wearing and low in cost
Safe with acid, oil and water
Custom service is available,factory direct sale!