Designed just for free-form machine quilting, this presser foot has a big, 1"-diameter foot to provide more surface contact with the fabric for better control. Made of clear plastic so you can see where you're going and where you've been. Unique thread slot with 1/4" on either side of the center needle position makes it ideal for echo quilting. Needs an adapter for the Bernina. (Call us if you're not sure which shank you need.