Wheels have a hard polypropylene core for strength under a polyurethane tread that combines the abrasion resistance of plastic with the shock-absorbing qualities of rubber. They can be used on smooth and rough floors and in areas with debris. Friction on their stem's grip ring holds them in place. Ball bearings in the wheel provide easy rolling. Casters have double-ball swivel bearings for the smoothest swiveling.

Casters with total lock brake the wheel and lock the swivel with one press of the foot pedal.

For technical drawings and 3-D models, click on a part number.