For use with the Automatic Buttonhole foot R, to feed unever layers smoothly, ensuring even and precise buttonholes.
Can be used on materials such as denim, wool fleece or stretch fabrics.
For Elna Top Loaders Category C :- 580EX, 580+EX, 720EX, 740EX, 7300, 8007, 8100, 8200, 8300, 8600