Listing is for one (1) Service Caster Series #35 swivel caster with a 4" diameter by 2" wide semi steel cast iron wheel and a bolt on swivel lock capable of supporting 1,000 lbs./caster. When searching for a reliable and durable solution for heavy duty projects, consider Service Caster?s Series 35 semi steel cast iron wheel casters. The Service Caster Series #35 is ideal for material handling, carts, equipment, and shop projects. The semi-steel cast iron wheel is built to withstand high capacity, heavy loads up to 1250 lbs and in temperatures up to 600?F. An economic choice over steel, semi-steel wheels are abrasion resistant and rugged. Finely crafted with a machined hub, wheel face and 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 industrial and commercial equipment. Even drywall carts, welding carts, and wall panel carts will be ready to roll on the Series 35, keeping you moving forward.