DCM-RRO.2 Rolling Road (O-Gauge) Premium Edition – 2 AxlePremium O Gauge Rolling Road Our O Gauge Rolling Roads are designed to be very easy to use and exceptionally reliable. We use only high quality materials so you can expect many years of trouble free use. We have added this 2 axle variant for two reasons: First, many O scale modellers use only smaller locomotives and most of those can be successfully used with only 2 rollers and of course, there are those with larger locomotives who simply want to add