Once again a good value sturdy mount for guitar at an excellent price. The problem is the spring operates in the wrong direction. Instead of springing open it should spring closed. With foam mounts on the jaws, these gradually relax with time. The result is you tighten the mount, the foam relaxes, then after a while the mount falls off the guitar. You reattach it, tighten as much as you dare, but the same thing happens. Now on my mount I have reconfigured the spring to close. Now when the foam relaxes the spring takes up the gap and the mount remains attached.