Wheels range from soft rubber that absorbs shock while providing good traction on rough surfaces to hard, impact-resistant rubber that rolls easily on smooth surfaces.

Polyurethane wheels combine the abrasion resistance of plastic with the shock- and sound-absorbing qualities of rubber. They can be used on smooth or rough floors and in areas with debris.

The wheels dissipate static to protect sensitive electronic equipment from electrostatic discharge. Friction on the stem's grip ring holds the caster in place.