Listing is for one (1) Service Caster Series #30 swivel caster with a 8" diameter, 2" wide moldon rubber tread set on a aluminum core wheel and maintenance free precision ball wheel bearings fitted with a top locking brake. Supports 600 pounds (lbs) per caster. When searching for a reliable and durable solution for medium and heavy duty projects, consider Service Caster’s Series 30 top plate rubber on aluminum wheel casters. The Service Caster Series #30 is ideal for material handling, carts, equipment, and shop projects. The rubber tread performs especially well on hard surfaces such as concrete, tile, and wood, while the aluminum core wheel stands up to heavier loads with a stable and secure roll. Finely crafted with double ball bearing heat treated raceways, these versatile casters are ideal for a wide range of applications, such as dollies, platform trucks, warehouse carts and freight terminals. Or ensure a smooth and 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.