I have a Pfaff with the snap on 1/4" foot with edge guide and love it. It is a scant 1/4 inch foot. I also have a Juki TL2010Q. It is a high shank machine. I have an older Pfaff that is high shank too. In order to use the snap on feet for the older machine, I got an adapter for snap on feet. I screw the adapter on my older machine and then can use the snap on feet from the newer pfaff including the 1/4" foot with edge guide.. Since as I mentioned the Juki is high shank, I tried the adapter on it, so I could use the 1/4" foot and it works beautifully. I now have a scant 1/4" for my Juki. I have tried some of the high shank 1/4" feet with edge guides that can be ordered online and they are a true 1/4 ", not a scant 1/4'.