The Metro SMA30A-ADD SmartLeverâ„¢ 30" Single Arm shelving unit is designed for efficient organization and storage. This quick-ship unit includes one SmartLever Arm with an ArmKeeper for secure attachment, four shelf mount hooks for versatile hanging options, and four locking wedges to ensure stability. NSF certified, this shelving solution is ideal for commercial and industrial environments, providing durability and reliability for your storage needs.