The Metro SMA30A SmartLeverâ„¢ 30" Arm Pair is designed for versatile shelving solutions. This set includes two SmartLever Arms equipped with ArmKeepers for secure shelf placement. It also features four Shelf Mount Hooks for easy attachment and four Locking Wedges to ensure stability. NSF certified for safety and quality, this shelving unit accessory enhances organization and efficiency in any space.