This is a Mannin Models 3d printed kit of a Ruston & Hornsby class 44 3d. If you want to use this small loco for your O9 model I can produce an adaptor for a Kato chassis.
On30 ANNUAL 2014 - O scale narrow gauge - (Out of Print BRAND NEW BOOK)
On30 ANNUAL 2016, O Scale Narrow Gauge Railroading for Everyone (BRAND NEW BOOK)
O-16.5 gauge (7 mm narrow) B 7N-00 O-16.5 small engine shed
O-16.5 NG7 Gauge NARROW GAUGE Carriage Wagon ready to run
O-16.5 NG7 Gauge NARROW GAUGE IRON COAL WAGON ready to run