This model is a pair of British Railways diagram 1/110 rivetted 21t mineral wagon bodies at 2mm:1ft scale. One has the fabricated style of end-tipping door and the other has the pressed style. Both bodies fit the PecoParkside 12' wheelbase 21'6" over headstocks chassis which can run on N-gauge or 2mm finescale wheels on the correct axle length. Fitting them to the chassis will require cutting tiny bits out of the solebar flanges to accept the bottoms of the side stanchions, and fussy modellers will make sure the side of the chassis with the reversing brake lever is under the left hand side of the body (if the tipping end is the front).