I didn't like Metroplex's short ramp. So I decided to make this, so I duplicate it to extend the ramp further through the base mode. The Metro adapter is required to lock this on to the orginal ramp, also the two pegs connecting will need to be cut or shaved down to length to fit the adapter. But then the other ramp pieces can stay intact and connect to each other. The orginal design was a solid piece, this is version 7 and the two cut out pieces are interchangable with a Titan's return adapter. Allowing the Titan base's to finally attach to Metroplex and the other road pieces I created.