The Metro SMA30A 30-inch SmartLever shelf arm pair is built to securely support shelves in storage and transport setups. Includes two SmartLever arms with ArmKeepers, four shelf-mount hooks, and four locking wedges. Constructed of epoxy-coated steel to resist corrosion. Multi-colored design simplifies identification and enhanced assembly efficiency. Eligible for free shipping if signed in, order total is greater than $500, and shipping to the 48 contiguous states.