Walthers Trainline 40-Foot Plug-Door Track Cleaning Boxcar CSX 135720, HO Scale Quick & easy way to reduce layout maintenance Remove dirt & grime while you run your trains Replaceable spring-loaded custom Bright Boy abrasive pad Colorful paint & lettering RP-25 metal wheels Realistic Paint Schemes Body-mounted magnetic knuckle couplers RP-25 Metal Wheels