Looking for a way to maximize your guitar’s tuning stability? Grover’s Roto-Grip Locking Rotomatic 509 tuners boast a rock-solid string locking mechanism to facilitate easy string changes and to keep your tuning exceptionally stable. What's more, these tuners feature Grover’s famous 18:1 ratio for precision fine-tuning. Here at Sweetwater, we love to mod and tinker with our instruments, and one of the most common upgrades we prefer is a set of high-performance Grover locking tuners like the 509 series!
Grover has been keeping the world's finest stringed instruments in tune for over a century. The company started out in the late 1800s producing banjo and guitar tuning machine heads. Eventually, Grover expanded into making tuners for mandolin, dulcimer, ukulele, violin, pedal steel, and bass guitar. Inventor of the enclosed, permanently lubricated machine head, Grover tuners represent original equipment on many of the world's finest stringed 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."
| Specification | Detail |
|---|---|
| Intended Instrument | Guitar |
| Configuration | 3+3 |
| Finish | Chrome |
| Locking | Yes |
| Gear Ratio | 18:1 |
| Peg Diameter | 0.389" (peg) |
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Sweetwater's been selling on eBay since 2001, with 99.9% positive feedback!