Heavy Duty Polyurethane Universal Brake Casters
360 degree movable casters,also called universal casters,the structure can 360 degree rotate;Fixed casters, also known as directional casters, have no rotating structure and cannot rotate.Usually,two kinds of casters are generally used together, such as the structure of the cart is the front two directional caster wheels, and the rear closes to the push handrail is two universal caster wheels.Casters are made of a variety of materials, such as cast iron wheels, nylon wheels, etc