I have one that came with my Gammill that I love. Mine is not exactly the same as the one in the picture, but similar. I had a bit of trouble winding a bobbin nicely and consistently. Someone on my Gammill group suggested a lamp dimming cord. You use it like an extention cord, but there is a small adjuster. You can make the bobbin wind as fast or as slow as you want. Now I MUNCH down on the power foot..and it only goes THAT fast.