This is a Railtrax, 3D resin printed in the UK, replacement for both gears of for Hornby A4 and Duchess, part number X8849. You will need to reuse your existing 3mm shaft. This listing does not include the small intermediate gear on a separate shaft which we sell separately Please do not order if you don't have the necessary skills to fit this item. A level of mechanical competence is required to fit the gears. If you are unsure of the method of fitting, securing, and re-setting the wheel back to back distance, then please speak to us and we can offer a gear fitting and loco testing service.
