The Quantum Food Service WR-SB2R2 casters feature a set of four wheels designed for optimal mobility and stability. This set includes two 5" swivel casters equipped with brakes for secure positioning, alongside two 5" rigid casters for straightforward directional movement. Constructed from durable thermoplastic resin, these casters are built to withstand heavy use while providing smooth rolling on various surfaces. Ideal for food service equipment and other applications requiring reliable mobility, the WR-SB2R2 ensures ease of transport and enhanced functionality.