yes, it is a special bobbin case..has a blue arrow on it, instead of the red, that is on your bobbin case now..it is supposed to make it so you don't have to make any adjustmants on the bobbin case when you are FMQ'ing..it is already set for you..I hate messing with the tensions..i just end up more confused when i do! lol! I will let you know how it goes today, when i do a trial run with it..