I think the name of your machine and model will be on the back of the bobbin package.....if all else fail take a bobbin with you to a sewing machine store and they will fix you up......and I have over 100 bobbins from plastic to metal.....and I use them all...I hate not having the color I need wound and ready to go.....just ask around and all will help.....:-) Good luck I'm sure you will find what you need...