This is a Singer model 127, 128 shuttle and bobbin. Notice the position of the notch. That is the main difference in the Singer VS2, 27, 28 models and the Singer 127, 128. It appears to me that the Free VS also takes this same shuttle and bobbin but, I don't have one of them to try it in. We have more than one Singer vibrating shuttle and bobbin so the one on the photo may not be the exact one that you receive. It is used condition and is vintage not new. We are selling one bobbin and shuttle at a time.