These caster wheels are non marking injection molded polyurethane tires mechanically bonded to a polyolefin center. They are especially suited for use in Research Laboratories, Hospitals, Food Service, Schools, Bakeries and other Institutional applications. These caster wheels are easier rolling than Gray Rubber on smooth floors. They withstand exposure to many chemicals and solvents. They can be used in industrial applications which do not involve shock, overloading, abuse, obstructions, poor floors or storage ( standing ) loads.