Plastic wouldn't work in my 201. Had to buy metal ones from Sew Classic.
Originally Posted by
Vridar
Class 66 is correct. However, I'm guessing they got the plastic ones. I've had best luck with original metal class 66. They are shaped like those plastic ones but work much better. I've had some plastic ones stick also and trimmed them to some success. Buy from Sew-Classic. They will work.