Auto-Trim Tuning Machines - Locking Tuners for Guitars - 6 In Line Setup, Black

great ratio per turn , easy to install, superb looks and quality, and make string changing a breeze, which is the greatest thing for a live musician who just wants to take 1 guitar (easier to keep an eye on!). .. very good stability too , it cuts as you turn ,.. so if there was any slippage of strings you'd soon know about it haha! .. but they don't slip. so don't worry... there WAS an issue not long after their release , with the piston on the thinnest 'e' string not grabbing on a 9 gauge, (and possibly a 10) .. but this was addressed a couple of years ago now. .. i've fitted quite a few sets now, and ALL are still going strong, as are mine which have been in constant use for 5 years now and have been brilliant!

Bought these for an Ibanez RG421HPAM and they fit the hole perfectly. I used a rotary tool to make small guide holes for the screws and found a very useful video on a popular video website to ensure the machine heads are perfectly aligned. The auto trim feature is nice, I did wonder what happens if it stops working but I guess you would just trim the string as normal. They are holding tune really well but to be honest the guitar held tune well before, but being lazy I wanted the locking tuners for easier string changing. I recommend them and will be getting another set for another Ibanez come pay day.

planet waves, never disappoints

The screws provided with these tuners are of such poor quality that I had to stop fitting the tuners halfway through due to every single screw head snapping off whilst being screwed in (even with guidance holes drilled to reduce the friction on the screws). The screws and tuners now cannot be removed without damaging the guitar. I will now have to find and buy additional screws of the exact same measurements if I am to finish fitting the tuners. Changing the machine heads should be an easy 10 minute job, but the poor quality of the material provided means that I would advise people to choose an alternative product. Other reviews show the same problem, so this is not a one-off.

Nice tuners but screws snapped when fitting.

Not as pictured. The picture is laterally inverted which means that the screw loop part (the part through which the screw passes to attach to the guitar headstock) is on the right hand side when looking from the top of the tuning head (with the rotating tightening part facing you). Therefore if you buy this it will not fit the guitar if you need it as it is pictured.

These locking auto trim tuners are brilliant on my guitar. These tuners are NON-STAGGERED, which means they are for tilted back headstock like LTD, Jackson etc. The pictures clearly show them on a Fender style headstock, this is wrong. You would need the Staggered set for those guitars, so its very weird they advertise them incorrectly. Anyway, for your tilted back headstock, these are really good, locking tuners are a nightmare to shop for in the UK so these being available on Amazon is great!

Magnífica llave. Muy ajustada, sin olguras, fijación de cuerdas muy seguro y ratio óptimo.

Very smooth and easy tuning, and keeps strings in tune. Auto cutting of strings is a great feature as well.

acheté en promo 42 euros (moitié prix) pour remplacer les mécaniques un peu cheap d'une Jackson premier prix made in India, je suis plus que satisfait. Le système de coupe automatique est un peu déroutant et flippant au début, mais on s'y fait bien. Ces mécaniques sont stables et de bonne qualité. Une très bonne affaire.

Tenho desses modelos de tarraxas mais antigos e são excepcionais, comprei estas agora e já não são as mesmas.

Lovely