Listing is for a set of four (4) Service Caster Series #30 swivel casters with 8" diameter by 2" wide solid polyurethane wheel and maintenance free precision ball wheel bearings with top lock brakes and bolt on swivel locks capable of supporting a total weight of 4,800 lbs. (1,200 lbs. per caster). When searching for a reliable and durable solution to your caster needs, consider Service Caster's Series 30 top plate solid polyurethane wheel casters. The Service Caster Series #30 features a non-marking, non-marring polyurethane wheel. Molded as one solid piece, this wheel is free from debonding, and will not flat spot, as can occur with comparable polyurethane wheels, ensuring a smooth and solid roll over long periods of time. These versatile casters are ideal for a wide range of applications, such as dollies, platform trucks, warehouse carts and freight terminals. Or ensure a secure ride for food service carts, hotel housekeeping carts, and industrial and commercial equipment. Even drywall carts, welding carts, and wall panel carts will be ready to roll on the Series 30, keeping you moving forward. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward.