HO scale (pronounced “H-Oh”) is the biggest selling model railroad scale. For that reason there is generally a wider selection of HO scale model train sets and model railroading accessories available including locomotives and rolling stock.

The HO scale market is the biggest so the model train manufacturers cater well for the HO scale market.

HO scale is popular because most model railroading enthusiasts prefer a middle of the road scale size. Although HO scale is convenient for most people, it is difficult to run 50-car trains on even medium-sized HO scale model railroad layouts.

Enjoy your HO scale model railroading!