Only Bernina bobbins will fit in my 730 Artista. My old 930 takes a regular size bobbin, but I was sent 40 bobbins for it from a dealer. I ordered the bobbins for my 730 and they sent the ones that fit the 930. I was going to send the wrong ones back but they asked me if I had a machine they would fit and if so keep,them and they would send the correct ones. Needless to say I buy things I need for my machines from them. The nearest Bernina dealer is on the other side of Mobile from me over an hour away. Postage is cheaper. I do take my machines to the "local" dealer for check ups. We were military so the dealer I bought from was near a different duty station.