5 Inch Heavy Duty Top Plate Polyurethane Rigid Caster with Ball Bearing SCC When searching for a reliable and durable solution to your caster needs, consider Service Caster Series 35 polyurethane wheel casters. Listing is for one (1) Service Caster Series #35 rigid caster with a 5" diameter by 2" wide glass filled polyurethane on polyolefin wheel and maintenance free precision ball wheel bearings. These versatile casters are ideal for a wide range of applications, such as dollies, platform trucks, warehouse carts and freight terminals. Even drywall carts, welding carts, and wall panel carts will be ready to roll on the Series 35, keeping you moving forward.