Athearn MCH21 HO Knuckle Spring AAR Lower Shelf Coupler (1pr)

Athearn MCH21 HO Knuckle Spring AAR Lower Shelf Coupler (1pr)

A scale size knuckle spring (KS) coupler with metal coil knuckle springs

Features:-

* Scale size couplers are about 3/4 the size of standard couplers
* AAR standard E safety couplers
* Lower shelf commonly seen on freight cars after 1980
* With magnetic uncoupling pin