... , for shopping carts, Institutional Carts, Hand carts, Trolleys, Apparatus, Furniture. 4" Steam Caster, Medium Duty Caster, Shopping cart caster, Institutional Cart ... , Hand carts & Trolleys caster, Apparatus casters, Furniture casters.- WheelMaterial: TPR wheel and PP core- Bearing: Ball Bearing- Brake: Yes- Threaded stem ...