Give scaffolding, workbenches, and shelving reliable mobility with this set of 4 red polyurethane caster wheels. Each 8-inch wheel is built around a cast iron core with a non-marking polyurethane tread that resists wear and keeps noise down as you roll across the shop floor. A steel frame backs each caster for stability, and the wheels swivel a full 360 degrees so you can turn and reposition equipment in tight spaces. The built-in brake locks both the wheel and the swivel pivot at the same time, holding the load securely once it's in place. Each caster is rated to carry 800 lbs, giving the set of 4 a combined capacity of 3200 lbs, enough for warehousing carts, medical equipment, and factory machinery as well as household uses like kitchen carts and hand trucks. Mounting hardware is included for a quick, straightforward installation.