Great product as a whole. Bought (3) for pulling behind a lawnmower. Tracks great, pulls easily and true, turns on a dime. Only drawback I believe is the rails that go on the side. They are (8) pieces total that are held together horizontally by pins that pass through a barrel locking type system. The top panel is a type of gravity swing hook lock. Will do for quick access to open different panels or for different gate size configurations. Down side to this is when all are used and attached it leaves rather flimsy gates/rails that come unlatched easily going over bumpy terrain