As described, am using them for my Singer 201 vintage sewing machine so I can use different snap on feet.
I certainly apologize,but you did not send what I wanted,I ordered a foot holder for a foot with a fixation,and you sent an ordinary one,I have such.The product went for a very long time, I did not get it, I give you one star for the fact that you sent a high-quality product,I take off four stars for the fact that they cheated me.