Plastic roto moulded tunnel connecting Skyfort to Skyfort. See the Peppertown Skyfort Tunnel Panel for a complete tunnel set up or to make your own cubby connector. The RO1SC is an upgraded commercial version of the RO1 tunnel model. Length: 900mm and Inside diameter: 445mm. Colours do vary, but generally this tunnels comes in red, blue and yellow. Colour chosen at random unless specified when checking out.