In this pack you will find a transition section to go from my custom 3 lane tracks to the JR Cup 3 lane track from Tamiya. there are transitions from 100mm to 375mm long in 25mm steps. This should fit on the end of most Tamiya JR Cup Circuit track sections without modification to the track. I does not have pins but does have the sockets needed to accept the pins from the track. It will not lock in place, as the sockets are designed smooth, so tape is recommended to ensure the sections do not separate.