Heavy Duty Polyurethane Casters are made of pure premium grade proprietary polyurethane with donut tread (Sirius Heavy Duty). Ideal for applications where superior strength and high ergonomic performance is required. Tread has been matched with a double precision rigging that offers one of the smoothest rotations in the industry. Swivel sports a high-class three layered finish: brass, nickel, and chrome. Rigid comes standard in zinc. Orange tread color. 85 Shore A. Wheel core is constructed of aluminum. Made in Taiwan br>
High Capacity Non-Marking Glass Filled Nylon Casters are made of high-tech proprietary glass filled nylon (ROLLX). Designed to be ergonomically efficient. Resists most chemicals, solvents, gases, acids and steam cleaning. Provides a higher capacity than most glass filled nylon and phenolic casters, while weighing less. It also does not absorb water. Top plate measures 4-1/2" x 6-1/4" Black tread color. 85 Shore D. Wheel core material is glass filled nylon (ROLLX). Made in Canada. br>