These are Vanson locking. Pretty good "cheap" tuners. It's quite a 100% compatible swap. The screw holes are not perfectly alligned but it was pretty easy to screw the thing. They are also non 100% perfectly alligned but you have to be totally insane like me to notice it. Also I like more the tiny pegs because I think they are more elegant than the big chunky ones. Anyway without burning in and stretching the strings the tuning is almost frozen.