I have been using the foot and I love it. Why isn't this foot known about? It seems to grab the fabric edges and hold them while you sew. I am getting perfect scant 1/4" seams. The feet are only for Brother PS series but I'm sure they aren't the only spring action guide feet made. If you have the chance to try one out, you'll love it. I called my friend and he has several more packages of these feet if you have a Brother PS pm me and I'll get the feet for you.