The Gator GRC-Base-10 10U Rack Base with Casters features lightweight polyethylene construction. It fits under any Gator GRC rack or standard rack, has a 10 unit rack space, heavy-duty twist latches, 4 wheels (2 locking), and a recessed side handle. Lightweight polyethylene construction Fits under any Gator GRC rack or Standard rack 10 Unit rack space Heavy-duty twist latches 4 Wheels, 2 locking Recessed side handle