Guyker 6Pcs Guitar Locking Tuners (3L + 3R Handed) - 1:21 Ratio Lock String Tuning Key Pegs Machine Heads with Hexagonal Handle Replacement for LP SG Style Electric, Folk or Acoustic Guitars - Black

Very good looking machine heads, they do seem to be very well constructed, they all turn very smooth and precise, I was worried as some reviewers mentioned that the high E and B strings could slip, so I did check the end of the pin and they all looked fine to me, installed them on a IYV IP-300-TSB guitar and they have been working fine for over a week, no tuning issues, they look really nice. I made sure to get the correct version, so they were a perfect drop in, so install was a breeze, I am so impressed that I am going to get a set for Strat (2 pins instead of screws for affixing to the headstock) and put on my MIM standard... if all goes good, I will also do it on my Tele... Re-stringing the guitar took a couple of minutes for all 6 strings, and with the strings being cut very close to the peg, the headstock looks very clean & tidy. No need to pay for the brand name, these look & work great, and the price is very good.

I have these on 2 of my guitars, one is an SG clone, and the other is an Ibanez electric acoustic. They're great tuners. Very smooth turning, holds their tune a lot better than stock. Very easy to install.

Good build quality. Easy drop-in install for me. The paddles are WAY too small.

Great product and the holes line up for my s-style geetar. easy to install and very stable. They are solid and add a little extra weight to my headstock but I am very strong and can compensate for any possible head dive.

Excellent value! These are precision machined with flawless chrome finish. I have been through several string changes and have not found anything to complain about. Smooth, accurate, and stable all get their box checked. This is typical of Korean machining and was a big factor in my decision to try them.

I have installed these tuners in 6 guitars at this point. Each set fits great and works perfectly. A great upgrade over stock cast tuners.

Fit perfectly on my Epiphone LP and the ratio makes it much easier to tune.

The first set of Guyker 6Pcs Guitar Locking Tuners (3L + 3R Handed) - 1:21 Ratio Lock String Tuning Keys there was one tuner with a threaded ferrule I was not able to thread on. It would go on about a half turn and then stop. Since I couldn't tighten it I ordered a second set and will return the first set. Fortunately I didn't return the first set yet because two of the tuners would not take the threaded ferrule. I managed to get a full set from the two sets so I will now return one set. Then I kept breaking the same string at the same point where it exited the tuner. I saw the edge it was wrapping on was sharp so I sanded it smooth. The others looked sharp too so I sanded them all just in case. Then, while tuning my guitar one of the tuners just kept turning for three or four turns until the string began tuning to pitch. And then it started getting tight and difficult to turn. I tried several times with the same results. I'm done trying to make them work. I was trying to save some money but it's not worth it if they don't even tune properly. I bought some Tone Ninja black locking tuners for about $14 more. But they were worth it. They installed easily and work great. I am returning the 2nd set of Guykers.