Both APC and Master Airscrew have quite extensive pusher prop ranges-while Zinger has a huge range-do a search for 'pusher propellers' at www.towerhobbies.com Graupner do pusher props as well-but seem a bit hard to find............ Punctilio props in the UK do a big range-but mainly in the larger sizes (worth an inquiry though)

ChrisM
'ffkiwi'