No more tedious wheel cleaning! Clean locomotives and rolling stock wheels quickly, without scratching. Roto Wheel Cleaner cleans all wheels at once and quickly. Power from transformer or track, the 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 in (30.5 cm) and rolling stock up to 10 1/4 in (26.0 cm). RoHs compliant.