Guyker 6Pcs Guitar Locking String Tuning Pegs (3R + 3L) – 1:15 Vintage Deluxe Style Tuners Key Machine Heads Set with Keystone Knob Replacement for Les Paul Style Electric or Acoustic Guitar - Chrome

Good tuning stability and locking was easy to use

A bit worried about buying these after reading some reviews, but glad I took the chance. They look nice, not great, but good enough for my $200 Epi Les Paul Special, a HUGE upgrade from whatever crap tuners were on it from the factory for sure. Installed easy (you will likely have to drill the holes a bit larger if your tuners have the push in ferrules and not the screw in type, if that is not what you want, you need a different set of tuners with the push in ferrules).They are a bit inconsistent in the resistance of turning the knobs, but not too bad and may free up a bit over time (they are a bit stiff, but I'd rather them be stiff instead of lose). The sting locks all work well, but remember these are not high precision, so keep your expectations realistic. If you want Grovers, buy Grovers. These will probably work like true locking tuners will if you take your time, but I left a bit of string so I could wrap the sting at least once around the peg after locking and I did not overtighten the locking screw as the treads are not as precision looking as higher quality tuners.Again, for under $30, I'm impressed. They look good, function better than expected, and give the old Epi a more vintage style look. I would not put these on a Gibson, but for a cheap Epi or equivalent, they are more than adequate and I'd buy them again.

Guyker locking tuners fit my Epiphone ES 339 pro perfectly. The existing holes in the headstock we’re the size needed to fit these new tuners. And most importantly the spacing of the holes that allow you to screw down these new tuners to the rear of the headstock were perfect. It took no time at all to install these. I had read some reviews about these tuners being hard to turn and the locking screws not working properly. Mine seem to turn fine although I did turn both the tuner pegs and the locking screw many times to make sure there was no problems. I also put a very small amount of 3-in-1 oil on each to make sure they would work smoothly. I use the Billy Gibbons 7 gauge strings on my guitar and had no problems with the lockers holding on to the strings. Even the very thin high E string. I have had them on for several days now and have no problems holding the strings in tune. I had tried to get some higher end tuners but they are sold out almost everywhere. When I saw these for approximately $20, I thought what could I lose. The Kluson locking tuners are 19:1 ratio compared to these at 15:1 but that is still a little better then the stock Grover deluxe. So far I am very happy with this purchase.

Popped right in with no issues.These have the screw in collar which is what my Epiphone 339-Pro uses. They feel as sturdy as the original tuners but with locking capabilities. Are they built like an $89 set? No, but I gave no regrets.

I couldn't see installing top-of-the-line tuners in a bolt-on Epiphone, but these gave it a GREAT 'gibsony' look at feel. Locking makes stringing and tuning very easy. Well worth the paltry sum for a cheap knock-about

From the start there were issues. It claimed to be 9mm shafts but I had to open the holes to use these. Next, I could not keep the locking shafts tight. Eventually, one backed out and was lost, so I just removed the rest to stop the aggravation. Next, a plastic key came off. They are not screwed into the peg, like most tuners. Its just a press fit, and obviously not hard to come off. Most recently, I discovered that without the locking shafts, there was nothing holding the rear cover and tuning jackscrew in place. One popped off and now that I have lost what I did with the five shafts that remained, I have nothing to keep the cover and jackscrew in place. I hate to spend even more money on a cheap guitar, but I should have spent the extra $20 bucks for a higher quality product. Buy once, cry once. These tuners are tearjerkers.

I was not able to mount one of the tuners out of the box, it would not take the mounting screw.Rather than going through the hassle of returning, I was able to clamp the tuner down with locking pliers and used the mounting screw to ream it. Had to apply pressure to get the screw started, was somewhat fiddly. Also left a rough surface where the pliers clamped the tuner, it scratched my finish a bit when installed. But I was able to get my guitar installed.Not sure how well they hold tune, but they look nice. Would have probably left 5 stars if not for the annoying lack of quality control.

Fantastic upgrade for my Epiphone SG. I hated the stock mini buttons, I love these keystone shaped new ones. Stays in tune well too