Traveler Guitar Locking TunersImprove tuning stability and make restringing a breeze with Traveler Guitar Locking Tuning Machines. These 3 a side sealed locking tuners use a threaded pin mechanism to lock the string in place when installing new strings, making restrings much quicker and easier. They also allow strings to be cut very close to the post, reducing any sharp, protruding string ends. Built to be a drop in replacement to the existing tuning machines on many existing