A precision 4mm diameter shaft x 150mm suitable for many of our plastic gears, sprockets, model bearings and model wheels. This steel shaft is, we believe, silver steel and has ground ends making it ready for use.
What do you mean by a mounting kit? This is simply a shaft used for model making in general and as such does not have any accessories to go with it. We do stock couplings, bearings, hubs etc. that fit this shaft.