They come off my layout and have been fully tested prior to posting. Ref - 371-035 Class 20 Diesel Locomotive Twin Pack in Hunslet-Barclay Livery is a N Gauge model produced by Graham Farish in the Modern Locomotives range.The Class 20 was often seen working in pairs. This product belongs to the following era(s). The item "Graham Farish N Gauge 371-035 class 20 diesel TWIN PACK" is in sale since Wednesday, January 15, 2020. This item is in the category "Collectables\Model Railways & Trains\N Gauge\Locomotives". The seller is "davidsouthern2009" and is located in BOLTON, Lancashire. This item can be shipped to United Kingdom.