Help make moving wire shelving easy with the caster kit for use with Alera wire shelving. Constructed with a snap-ring around stem that makes for an easy attachment. The 360-degree rotation wheels provide easy mobility for maneuvering the shelving in and out of spaces and around corners. Lock the casters when at rest for added stability. Using casters may reduce load capacity for the shelving unit.. FEATURES: Snap-ring around stem for easy attachment. - Helps make moving wire shelving easy. - Compatible with Alera wire shelving racks, sold separately. - Wheels may be locked for stability. - Using casters may reduce load capacity for the shelving unit.