Check the listing for details. Wheel scrapper (loco maintenance) - PL-43. Condition: New, Made in United Kingdom. Listed at 16.43 USD. There are 2 factors that help your locomotives to run reliably, clean track and clean wheels. The locomotive wheels are fitted with pick ups and the power goes from the track into the wheels and then via the pickups to the locomotive’s motor, or, in the case of DCC setups, the locomotive’s decoder. If there is dirt on the track, the wheels or the pickups, then your locomotive will not run reliably. This is where this wheel scraper comes in. About the size and shape of a small pen, it has a small metal scraper in place of a nib, and at the other end it has a wire to connect to one track connection of your model railway power controller. To use the wheel scraper, you will need another wheel scraper, or a wheel brush (Peco PL-42), to connect to the other track connection on your power control.