A Western Austrlaian Railways Cast Steel 50 Ton Ride Control bogie with Roller Bearings and Disc wheels, these where designed for use on Narrow Gauge, Standard Gauge and Broad Guage bogie exchange rollingstock. This is the Back Bogie on Standard Gauge and is painted Yellow, a Model Number of XCW 0558 with a W.C of 5ft 9in and 3ft 0 1/4in dia wheels, b.r.base0, is located Z-Axis 0.