Limited slip rolling action that "scrubs" the rails for rapid removal of deposits. Totally non-abrasive -- leaves no particles or other matter for secondary clean-up. May be used "wet" (recommended for rapid action and wheel cleaning). May be used "dry" (without fluid to clean the rails more slowly). May be used continuously without harm to rails or wheels. 100% Cleaning Contact with all rails at all times. Highly Snag and De-rail Resistant because of rolling action. Will NOT damage delicate turn-outs. The wheels of the following cars are also cleaned. Easily replaceable standard trucks.
