Polyurethane tread wheels are versatile, resilient and cost effective. These polyurethane wheels are non-marking meaning they won't scuff up the floors where they are rolling. The softness of polyurethane wheels ranges from the hard plastic polyolefin wheels to the soft polyurethane elastomer wheels. These Polyurethane wheels won't get flat spots from resting on one side for a long time, and each different wheel has exceptional impact force resistance. Choose from Poly-Pro, DuraLastomer, Ergolastomer, MaxRok, phenolic, and Polymadic wheels.