Our replacement roller casters come in sets of 2 or 4 and include all of the necessary hardware for installation. These products are also constructed of durable metals like steel, so they’re more durable than comparable products made with other metals. Please keep in mind that, while some of these roller style casters are universal, others can only be used with specific equipment. For related products, check out our refrigeration lighting, defrost timers, and refrigeration air fresheners. If you're wondering where to buy beverage-air roller style casters, we have a large selection of beverage-air roller style casters for sale at the lowest prices.