Every time I get impressed with the quality of this brand Gotoh , I have bought several different models for different guitars, let me tell you that locking tuners do make a change for tuning stability and of course for the most obvious reason , changing strings made easy! I personally installed this model on a Epiphone SG Special P90 in Pelham Blue ! Not that it needed it but I prefer the lock of the tuning pegs on this guitar and the fact that I can change strings quickly and still have good tuning stability, I have to say that if you want to install this model on this particular guitar you will have to glue the base of the tuning ? The little tube that goes into the guitar , you’ll see if you get it , I will try to edit this review when I’ll get it for another sg that is more suitable for this model , great quality overall