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Reviewed in the United States on April 3, 2025
Theses work great, only needed to open the existing holes a tiny bit
Allan M. Colby
Reviewed in the United States on July 19, 2024
You can't go wrong with Grover tuners. and this model fits the application perfectly. smooth action and they don't slip.
Greg
Reviewed in the United States on February 1, 2023
These are really nice and quality made. I mistakingly bought these for my Les Paul. Wrong style. A Les Paul takes 3x3 tuning machines. I would buy again all day long.
Danny L.
Reviewed in Singapore on November 14, 2023
Happy n satisfied with it
Randall C. Bowman
Reviewed in the United States on February 17, 2020
The accuracy in tuning, the look, and the ability to hold a tune are all outstanding features. My favorite for Fender-style heads.
Scott Elliott
Reviewed in Canada on November 11, 2020
I would recommend this product to everyone
Vincent Rea
Reviewed in the United States on August 13, 2018
These tuners are great, now easier to change the strings and in no time and the guitar stays in tune much better. I have these on both my guitars. also much better than the g-force tuners.
Terry Relph-Knight
Reviewed in the United Kingdom on November 4, 2018
The current Grover tuners are relatively expensive but they are perhaps the best I have found and are backed by a lifetime guarantee.
Corporal Clegg
Reviewed in the United States on March 24, 2016
These are great tuners. So are the non-locking Grovers that I replaced with these. The one absolutely annoying thing is that these don't have the screw hole at the same place as the non-locking equivalent. Thus I had to drill a new hole for each tuner about 2mm's away from where the other set had its screw holes. And, true to form when you're dealing with wood only so thick, I went too far and the drill bit pierced out the front of the neck. If you're gonna use these to replace another product--even Grover, you might want to consider if the holes line up or if you're into drilling new holes. If you're paying a pro to do it, that's another story. They are excellent and stay in tune.
Sean L. Powell
Reviewed in the United States on December 28, 2015
The Mini Roto-Grip Locking Rotomatics (505 Series) work just like the Schaller locking tuners (e.g. OEM on the Deluxe Fender strats), for me locking turners are a must for staying in-tune and quick string changes. Also, 18:1 ratio is a must for those guitars have string(s) that are sensitive to being tuned. I would notes that you will pay ~$20 more for black tuners over chrome.I put these tuners on my Schecter PT (OEM w/ black Mini Rotomatics (205 Series) 205BN6) and ESP LTD TE (chrome tuners that are near identical to the Mini Rotomatics 205 Series). I would note that the set screw on the back of the headstock differs between the 205 Series and the 505 Series; you will need to drill a pilot hole for the new screw location (I used 1/16 in. drill bit w/ good amount of black electoral tape wrapped-around to mark screw depth and to prevent over drilling). The 505 tuners will cover-up 90% of the old screw holes, I filled the holes with a of Elmer's Wood Filler that (2 oz. tube costs $3 @ Home Depot) which makes it nearly invisible. The older and cheaper Grover Mini Locking Rotomatics (406 Series) may be an exact replacement fit but I don’t think so (I reviewed the diagrams at the Grover site but the measuring standard differ between the series so there is not apple-to-apple comparison of their dimensions); plus I prefer the “thumb screw” mechanism style on the 505 Series.
lithos
Reviewed in the United States on August 23, 2014
If you have a 12 string, these are absolutely necessary if you ever intend to change your strings. Two sets are required, and you will probably have to drill new pilot holes for the screws (I did have to on a Martin 12 but not on a Guild 12). That will leave the old screw holes, but I don't mind that slight cosmetic flaw. I've put the full sized ones on most of my guitars, except for the ones with Waverly tuners, and the minis are perfect for 12 strings. Easy to install and perform flawlessly with regard to accuracy and holding tune, as you'd expect from Grover tuners.Some practical advice: Saddles often aren't (and never should be) glued in, so if you remove all the strings the saddle will fall out. If you have an under-saddle transducer, it could also fall out and get damaged. I removed the lowest four strings and highest four strings, replaced the three lowest and three highest machines, and strung those up. Then I replaced the other machines and finished stringing. That way there was always some string tension on the saddle to keep it in place. Unlike another reviewer, I would never recommend (nor does Martin) medium gauge strings. The string tension of a 12 is such that you'd risk producing belly bulge, bowing the neck, or in a worst case pulling out the bridge. This kind of damage probably wouldn't show up in a month or a year, but it almost certainly would over the life of the guitar.A note of warning which really doesn't apply to 12 strings, as they take light gauge strings: The full-sized Roto-grip doesn't work on the low E (0.056) of a medium gauge set. It won't clamp down on the string. I thought it was a defective machine, so I contacted Grover and they promptly replaced it (Grover has outstanding customer service), but the new one had the same problem. I put a regular Rotomatic on that string, which is essentially cosmetically identical, and I don't mind tying off one string of a 6 string set.
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