Pye Korry ; ( indegenous for ' by golly ' ) .

http://discovery-aeromodels.com/en/carbon-spinner-for-aeromodel.html




looks like the SPINNER from Yatsenko has the prop drive / split collet integral . The little one is more curvey . However , if the bearing I.D. , shaft is 7 m.m. ,
any Super Tigre one would do , at a pinch .  So a measuring stick might be a good start .