Greist made all the early buttonholers for Singer and they were for short shank machines. I expect all of their other attachments would also fit. I have a zig-zagger attachment for my Featherweight that says Singer but I think was actually made by Greist. My 85 year old repair guy says all the good attachments were made by Greist and that Singer was "late" getting into the attachment business and either "borrowed or bought" most of theirs from Greist.