I received the pair of 4-way restrictors in the mail today and they are perfect. Excellent, smooth, accurate machining. These are smoother than the originals. Riding the stick along the inside edges of these restrictors is like greased glass. I didn't intend to but I think I am going to replace the original restrictor in my SPO stick with one of these (I only planned to replace missing restrictors with these), just for the enhanced smoothness when the stick is riding along the inside edge of the restrictor (like when quickly going from up to left, left to down, etc.) Very well done.