The Wells 22025 Caster Kit includes a set of four durable casters, designed for optimal mobility and stability. Two of the casters feature front brakes for secure positioning, while the kit raises your unit by a nominal height of 2-1/4 inches. Specifically engineered for compatibility with RWHD-1, RWHD-2, and RWHD-3 models, this caster kit enhances functionality and ease of movement in various applications.