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The Grover Roto-Grip Locking Super Rotomatics 509 series tuning machines provide an innovative design for quick string changes and precise tuning. You'll love how the thumbscrew mechanism securely locks strings into place, allowing for rapid string installation and removal. The 3-step button adds visual flair while the lubricated 18:1 gear ratio delivers smooth, accurate tuning with minimal backlash. With a 25/64" post hole and durable components, these machine heads are built to handle even the heaviest string gauges. Designed as a drop-in replacement for a variety of popular tuner models, the 509 series tuning machines bring enhanced functionality to your instrument.

GROVER Roto-Grip Locking Super Rotomatics 509 Series Tuning Machines Chrome

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5

1 Reviews

100%

of respondents would recommend this to a friend

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  1. Concerts1
  2. If you can afford them, use em.1
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  1. Easy To Use1
  2. Feel1
  3. Functional1
  4. Good Quality1
  5. Large Tuing Buttons1

Reviewed by 1 customers

  • The Best

    5

    submitted7 months ago

    byA440

    fromSitting

    I recently bought a B.C. Rich Legacy B. Great guitar. When I went to adjust the tuning, I thought Wow, these tuners feel nice. After using them for a while now, I'd venture to say that they are the nicest tuners I've ever used. The accuracy and resistance are just spot on. I also really like the large buttons. In low light they're really easy to find. Just the perfect recipe. I'm old school and prefer non-locking tuners, but other than that these are great. So nice it made me want to leave a review for them!

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