Rolling Road (Multi-Gauge) 12 Axle – The ultimate Rolling Road… Twelve sets of active rollers in ONE pack! Perfect for multi-gauge modellers, for large articulated or full diesel sets! Compatible with DC, DCC or Marklin AC models in N gauge, TT or HOn3, HO, OO, ON-30, EM and P4 gauges, this is without doubt the most versatile product you will ever buy! Each pack contains twelve pairs of roller bearing supports with easily changed spacers to suit all of the above gauges. Simply place on any powered track to use! DCCconcepts rolling roads are guaranteed for one year and spare parts, including screws, are available.