Stop cleaning locomotive and rolling stock wheels individually. Roto Wheel Cleaner cleans all wheels at once quickly and will not scratch wheels. Power from transformer or track, Wheel Cleaner works with both analog (DC) and digital (DCC) control systems. Includes 2 sets of cleaning pads and 1 set of scrubbing pads. HO scale Roto Wheel Cleaner will accommodate locomotives up to 12" and rolling stock up to 10 1/4".