Fixed industrial caster have no rotating structure and can't be turned. Normally two kinds of casters are generally used together. For example, the construction of this trolley is just two fixed wheels in the front, along with both back wheels are close to the handrail.
Casters have casters in a variety of substances, such as cast iron wheels, nylon wheels, etc.. Mainly broken up into super artificial rubber casters, polyurethane casters, plastic casters, nylon wheels, casters cast iron, higher temperature casters, rubber casters, S-type artificial castors.