On30 Vertical Boiler Locomotive Conversion Kit, by Railway Recollections
Parts needed On30 Bachmann 0-4-0 Gas mechanical Locomotive. The Bachmann couplers get reused.
The is a freelance locomotive. I had the drive and I put it to use for designing a locomotive kit. A small locomotive like this one has many uses.
For multiple purchases, there is a link for combined shipping on the page you pay on, here on eBay.