I made my own by gluing a couple of tiny washer on top, I remove it every time I do a bobbin. Not as good as a purchased one but I think the Westalee ones are adjustable. If you will faithfully remove the foot every time you want to change the bobbin or re thread your machine then you should be okay. Just forgetting once will cause damage. The extra height on the foot does not allow the needle bar to come down fully and the needle will hit your bobbin case not the hole!