Kadee #308 - Under the Track Uncoupler

HO, S, On3, On30, O-Scale Uncoupler Under-the-Track O-SCALE: Because of the thicker ties and higher rail in O-scale it will be necessary to use 2 or 3 magnets stacked together and one steel intensifier plate on the bottom of the stack. Track not Included. Contains: One Delayed Action Magne-Matic® Uncoupler & One steel intensifier plate