The (2 EACH) PENN ELCOM 4 inch Casters featuring blue rubber wheels includes two swivel casters with brakes and two rigid casters, offering versatility and control. The blue rubber wheels ensure smooth, quiet movement while protecting floors from scratches. Designed for durability, these casters withstand heavy loads and provide stability during transport. The swivel casters allow for 360-degree rotation, facilitating easy maneuverability in tight spaces.