The Metro SMA21A SmartLever Arms (Pair) are designed for heavy-duty shelving and adjustable cantilever workstations. These 21-inch arms feature a patent-pending SmartLever design, ensuring exceptional durability and the ability to hold heavy loads. The included ArmKeepers provide ultimate adjustability and security, allowing for different shelf widths on the same arm. Constructed from epoxy-coated stainless steel in a distinctive gray/red finish, these arms resist corrosion and offer long-lasting performance. Ideal for creating customized industrial shelving solutions, these arms come with shelf mounting hooks and locking wedges for easy installation. Perfect for optimizing storage in commercial and industrial environments. Orders over $7,000 may qualify for free shipping; Contact us for details. (175 words)