The Swimline Solar Cover Reel includes (2) Aluminum Rail Mount Stands, crank and all the required straps and hardware. Designed for above-ground pools and the features include commercial grade aluminum construction, Sturdy metal cranks and nylon roller bearings that will provide easy operation for anyone. The Sturdy design mounts directly onto the top rail of your swimming pool which will provide great stability. The reel system can also easily disconnect from the reel mount by simply pulling out the pin to allow unobstructed use of the pool. This real system will support 3" and 4" Swimline Tube kits (sold separately).