Super8 to 8mm Film Reel Adapter

Its been a while since I've done a film related thing. This was requested by my girlfriend who works in film archival. Adapters like this used to be common but are now hard to find. 8mm equipment can be found for much cheaper on ebay than Super8, but Super8 films are more common. This allowed her to use an 8mm splicing stand with her Super8 films.