I have the Pro Quilting Queen, and have used regular bobbins, but I also bought some online from sewingpartsonline.com. I couldn't remember where I got them, but they very thoughtfully put a little sticker on the bag! Their phone number is 615-229-7171, and the part number is 102261103. It's a package of 10. I bought 2 packages, and I think they were about $5 a package. Oh, and I love my Elna!