Silver solder copper superheated boiler, 90psi working pressure, feed by axle pump and injector with auxiliary hand pump in tender. Gunmetal cylinders with slide valves actuated by Stephenson's reversing gear with pole reverser in cab. Mechanical lubricator on running board.
The engine and tender come with a pair of fitted transport boxes and tool kit containing a variety of spares, blowdown valve spanner etc. As a beginner's engine I think these are pretty much ideal - they go well, are easy to fire and drive and, should you need any spares, these are readily available from Polly Engineering.
Locomotive 26 inches
Tender 18 inches