This is a Mannin Models 3d printed kit of a Ruston & Hornsby class 44 in 1/35 scale (8.1mm to the foot). It is an unpainted resin and FDM kit, the painted pictures are to show you what it looks like when built.
The "1/35 scale Narrow Gauge Locomotive Ruston and Hornsby class 44" product would be an excellent fit for train enthusiasts who are interested in rail transport and want to display their collection of narrow-gauge locomotives.