Grover 406C Mini Locking Rotomatic Tuners - 3+3 - Chrome

Locking Guitar Tuning Machine Heads (3 + 3 Configuration), with Mini-Buttons, 18:1 Gear Ratio, Enclosed and Permanently Lubricated - Set of 6, Chrome
Grover 406C Mini Locking Rotomatic Tuners - 3+3 - Chrome image 1
Grover 406C Mini Locking Rotomatic Tuners - 3+3 - Chrome image 1
Sweetwater Savings: $35.51 MSRP: $94.50
Available Soon
Reserve yours now, risk-free, or contact us for more information. We'll ship it as soon as it's available.

Share this with your friends:

Most popular accessories & related items...

Grover 406C Mini Locking Rotomatic Tuners - 3+3 - Chrome
Available Soon Notify me

The Incredible Convenience of Locking Tuners

Grover Rotomatic 406C mini locking guitar tuning machine heads make quick work of tuning. With a gear ratio of 18:1, these locking tuners give you all the benefits of standard Rotomatics - plus the positive locking of Grover's internal cam post. Insert your string through the string hole, pull to tension by hand, and start to tune. As you begin tuning, only the locking cam in the string post turns. The string post begins to turn once the string is locked. In under one string post revolution, you'll be in tune. And you'll stay in tune, with Grover's Rotomatic 406C locking guitar tuning machines.

Grover: exceptional quality and lifetime warranty

Grover has been keeping the world's finest stringed instruments in tune for over a century. Grover started out in the late 1800's producing banjo and guitar tuning machine heads. Eventually the company expanded into making tuners for mandolin, dulcimer, ukulele, violin, pedal steel, and bass guitar. Inventor of the enclosed, permanently lubricated machine head, Grover tuners are original equipment on many of the world's finest string instruments. Grover employs only the finest materials and manufacturing methods, and stands behind their products with their lifetime warranty: "Should your Grover tuners ever fail, for any reason, simply return them to us for a fast and friendly no charge repair or replacement."

Grover Rotomatic 406C Guitar Tuning Machine Heads (Set of 6) Features at a Glance:
  • Set of six enclosed, permanently lubricated mini locking guitar machine heads
  • Internal cam post gives you effortless tuning and positive string locking
  • 3 + 3 Configuration
  • 18:1 gear ratio
  • Chrome finish
  • Includes 5/8" washers, bushings and wood screws
  • Grover Lifetime No-fault Warranty
Get easy tuning and positive string locking with Grover Rotomatic 406C tuners!

Tech Specs

Intended Instrument Guitar
Configuration 3+3
Finish Chrome
Locking Yes
Manufacturer Part Number 406C

Customer Reviews

Based on 18 reviews
Write your review

Excellent tuners

I dropped these into my older, Peerless built Gretsch 5129. The string holes accommodated my thickest string, .052, without a problem. Others have said that nothing thicker than .046 will fit through. Grover must have recognized this problem and solved it. Also, others have had their high E strings break. Mine hasn't broken yet. It's a .10 gauge E. The tuners feel great and work as advertised. Tuning stability is much improved but it's not perfect. The usual culprits, the nut and the bridge, are not the problem. It must be the Bigsby itself - no surprise. Overall, adding these tuners was an excellent and inexpensive upgrade
Music background: Hobbyist.

Great Tuners!

Another GREAT recommendation from my long time sales representative Chris McCown. Recently purchased a PRS SE 24 30th Anniversary model. Stock tuners were "OK". Chris recommended the Grovers as a do it yourself project. I am not a DIY kind of guy, and normally take these types of mods to my local luthier. But I was amazed and surprised, PERFECT drop in fit, easy to install, completed this myself with string change in under 1.5 hours! Makes changing strings a breeze. Best of all - they hold great tuning... This is my first set of locking tuners. Could not be happier!
Music background: Embarrassed to say 40+ years and still gigging

Certainly works as advertised

Changed the tuners on a used PRS Custom 22. It was already 2 years old when I got it from a friend. The tuners on the PRS wasn't bad at all but I wanted something that would lock the strings in place without changing the nut to a locking type. While not the best Grover has to offer, these babies worked great on this guitar! Very happy. And install was very easy since these are made to match up with most guitars and fit perfect on the PRS. Plus, buying online from Sweetwater makes it easy and painless as it was with every purchase from them!

great tuners

installed on my PRS SE C24 perfect fit and work great

Perfect fit

Fits perfectly in my PRS. Great improvement over stock tuners.
See also: Tuning Machines, Grover, Grover Tuning Machine Heads