I have them on all of my machines but just like the walking foot make sure its not generic and its for your machine, you'll save more in the long run if its made for the machine its on. Generics have been known not to hold up as well. But the guide on the foot is well worth the cost. You may still have to adjust your machine by sliding the needle left or right but once you know the setting then you're good to go and your seams will be consistant.