It is a free motion foot with a big clear plastic circle as a foot. It is made by the Little Foot Quilt Shop Co. They have even sent me a replacement one as the first one broke the connection going on the needle pin. The replacement didn't work, they sent me another and that one is not working either. It connects the only way I can see to put it on, but the bobbin thread never comes up. The company said they would give me my money back if this replacement doesn't work... I can't fault them in any way. They have been more than fair. I just want it to work!