MICRO TRAINS MAGNE-MATIC UNCOUPLER N SCALE Magne-Matic(R) Uncoupler is completely Assembled and ready to use. Install anywhere on your layout where track is straight and level. With Micro-trains Magne-Matic(R) coupling system, it is not recommended to place uncouplers on short radius curves, grades, or blind spots, since false uncoupling is possible. Features Ready-to-use permanent magnetic uncoupler mounted in Atlas type track. Fits: AHM, Aurora, Atlas, Bachmann, Minitris, Pero and Code 70 "T" Rail Track.