Walthers Trainline HO Track Cleaning Boxcar Canadian National Propeller and other hobby projects ARRMA Grom and other hobby projects The core of the model is a center pole that rotates in a direction opposite to the main platform making it look as if the carousel spins faster than it really does and creates the fascinating dynamics of the whole construction Trainline freight cars feature RP 25 metal wheels for superior performance on all kinds of track including smaller scale sized Code 70 and larger rail Other features of this Track Cleaning Boxcar include molded details that stand up to handling during operation and realistic paint schemes for good looks