A must-have detail for boxcars, flatcars, auto racks, cabooses and many other freight cars, end-of-car cushioning devices have been in service since the 1970s, providing extra protection for all types of loads by absorbing slack action. This WalthersProto kit makes it easy to add this authentic detial to your HO freight car fleet, and fits most models. The kit includes parts to convert four cars (two pockets each), and can be used with Proto MAX(TM) and most other popular brands of couplers, sold separately.