This is a new 12mm version (Crank dia 4mm, bearing O/D 12mm)
This allows a backplate to be fitted to your model so you can start it with a drill start
Suitable pull start 223000005, 31182
One Way Bearing for NB16 0.5 pull start Engine
This will fit the NB16 with Toki .05 Engine
This fits the Acme NB16 1/16 scale mini nitro buggy only.