Guyker Guitar Locking Tuners (3L + 3R Handed) - 1:18 Lock String Tuning Key Pegs Machine Head with Hexagonal Handle Replacement for ST TL SG LP Style Electric, Folk or Acoustic Guitars - Black

Don’t spend big money on expensive lockers these work great! I have them on several guitars and the install easy and work great!

Smooth tuning. Stay in tune. This is a locking tuner so if you screw the thumb wheel out to the limit (but not beyond because you might damage the screw or break it off) you can lube both the worm gear and the main gear inside.I dip a tooth pick in the grease and put it on the gears inside the tuner. Looking inside it looks like brass gears. I lubed it with lubriplate, a Lithium based grease. I suspect all geared tuners use brass gears so lubing with Lithium grease is a very good idea. It also helps to give the tuner that silky smooth feel.I adjusted the tension with the philips head screws in the tuning knobs. Ultra-smooth tuning.I had to drill holes for the screws because the old tuners used a peg (Sperzel tuners) instead of a screw. No problem. I was very careful about drilling the correct size hole and using screw lube on the threads so I would not break or strip the heads any of the phillips head screws.Note on adjusting the screws that hold the knobs in place: Do not loosen these too much or the tuner will bind because it will allow the worm gear to pull outward slightly while the knob is rotated. You can see this happening if you look closely at the back of the tuner. For smooth operation the screw has to be pretty snug but not tight. You can judge this by rotating the knob and feeling the torque required. Using a string winder gives you the feel for it.The appearance of these gold tuners is right up there with my Grover and Schaller tuners on other guitars. Those tuners were over a hundred bucks.I love the Guyker 18:1 tuning ratio. It makes tuning more accurate and faster with the smaller knobs on 6 inline tuners. The Sperzals had only a 12:1 tuning ration which is to coarse for me, particularly with the smaller tuning knobs on a strat-style guitar (6 inline).I have found over the years that Guyker parts have just as good quality and life expectancy as the higher priced tuners. It's pretty surprising. Don't let the low price convince you that it's low quality. I don't know how they do it, but the quality is great. I found that to be true of all Guyker parts that I have purchased including Bridges, String Stops, and now tuners. So these days my first choice is Guyker and if they don't have what I need I look to the higher priced stuff. All the big name brands have much higher prices, but my experience is that the quality isn't any better than Guyker. Maybe i shouldn't say this because Guyker might raise their prices!I don't get paid for writing this review and am not afilliated with Guyker. I just appreciate high quality and affordable prices. I own about 22 guitars (kind of lost count) LoL. And I work on them all. I love working on guitars (and playing).

Super fast shipping. Item as described, they really works great.

This was a project guitar that I replaced the neck on because the nut for the truss rod was stripped. I bought a neck off of eBay with pre drilled tuning holes. The tuning heads are large and makes these quite close together and a little awkward to tune when adjusting them. When it said left, I assumed that meant on the left hand side not a lefty guitar. I was wondering why I am raising the pitch turning clockwise unlike all my other guitars. Also had to drill new holes for the screw underneath which didn't clue me in that something was off. Chalk it up to the learning curve doing my own guitar modifications.

I like these machine heads. Hefty and quality. I put these on my yamaha FG401 acoustic guitar. I had to drill new holes but that's what we do as musicians. I had to knock out the bushings the factory had in there for the original heads. These fit perfectly and are a delight to have.

They look great, but don't know if they are actually great. Works good

Absolutely perfect

These are okay. I misunderstood their purpose when I bought them. I thought that they would help to keep a guitar in tune, but their purpose seems to be to hold strings in the tuner while they are being tightened. That was a problem that I did not have when I bought them. The machining is merely adequate and we'll see how good the gearing is. If you want good tuning machines, just pay for them and skip these things. People who are breaking strings are putting far too much pressure on the strings or are using old strings. The tightening pins could act as shears, so a little bit of pressure is all you need.