Grover 305C Rotomatic Tuners - 3+3 - Chrome

Guitar Tuning Machine Heads (3 + 3 Configuration), Mid-Size, with 18:1 Gear Ratio, Enclosed and Permanently Lubricated - Set of 6, Chrome
Grover 305C Rotomatic Tuners - 3+3 - Chrome image 1
Grover 305C Rotomatic Tuners - 3+3 - Chrome image 1
Sweetwater Savings: $29.51 MSRP: $79.50
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Grover 305C Rotomatic Tuners - 3+3 - Chrome
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Grover Quality in a Mid-Size Tuner

Grover Rotomatic 305C guitar tuning machine heads are a marvel of engineering and design. These are mid-size Rotomatics with a gear ratio of 18:1 and a housing that provides optimal bearing for worm, gear and string post. Precision-cut worm and gear serve up perfect meshing, eliminating backlash and slippage. A countersunk tension screw lets you customize tension to your personal preference. The Rotomatic's gear box is permanently lubricated, giving you a lifetime of trouble-free operation. 5/8" washers, bushings and wood screws are included with this set of six Grover Rotomatic 305C guitar tuning machine heads.

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 305C Mid-Size Guitar Tuning Machine Heads (Set of 6) Features at a Glance:
  • Set of six enclosed, permanently lubricated guitar machine heads
  • 3 + 3 Configuration
  • 18:1 gear ratio
  • Chrome finish
  • Includes 5/8" washers, bushings and wood screws
  • Grover Lifetime No-fault Warranty
Changing out your guitar's tuning machines? Go with Grover Rotomatic 305C tuners!

Tech Specs

Intended Instrument Guitar
Configuration 3+3
Finish Chrome
Manufacturer Part Number 305C

Customer Reviews

Based on 4 reviews
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Heavy, quality tactile feel with smooth, easy 18:1 operation. Maintains tuning perfectly. Seems to be the sweet spot IMO. Cheaper brands may be taking a chance while anything more expensive is a waste of money, unless you want a particular style. Yes they are smaller but look great on an SG. I chose these smaller heads at 18:1 over the larger standard size at 14:1. Worked out well for me.

Grover Rotomatics

Received them in 4 days in perfect condition.They fitted straight into my Maton acoustic without any need to redrill holes - perfect!
Music background: Hobbyist

Great Tuners!

They fit just right and work like a charm. Anytime I've had to replace tuners I've always used Grovers. They're good quality and reliable. Sweetwater gives fast and great service.
Music background: Musician and Recording Artist

Quick Fix

I bought these to help a Les Paul clone with tuning issues. The good: installation went pretty easily and the problem cleared up nicely. The one surprise: "mid-size" apparently means "Strat-size", so they are smaller than the originals. Not a problem, but small is apparently "mandolin-size", so you might want large for your Les Paul. Installation note: I put toothpick tips in the old holes to help the screws catch. I plugged the first hole completely and it was too much for the screw. The rest, I just put enough of the tip to fill the hole 1/3 to 1/2 way and it worked great.
Music background: Pro church keyboardist/bassist and rock musician with a day job
See also: Tuning Machines, Grover, Grover Tuning Machine Heads