A South Australian Railways XB Cast Steel 40 Ton Ride Control bogie with Roller Bearings and disc wheels, these where designed for use on Broad Gauge and Standard Gauge bogie exchange rollingstock. This is the Front Bogie on Broad Gauge, painted Grey and a Model Number of XB 6201 with a W.C of 5ft 9in and 3ft 0 1/4in dia wheels, b.r.base0, is located Z-Axis 0.