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Graph Tech Guitar Labs Ltd.

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Graph Tech Guitar Labs Ltd.

4.5 (123)

Ratio by Graph Tech Model # 8721-C0 (12:1 to 39:1) Electric Locking 6 in-Line

Name: Graph Tech Guitar Labs Ltd. Ratio by Graph Tech Model # 8721-C0 (12:1 to 39:1) Electric Locking 6 in-Line - Ratio by Graph Tech Model # 8721-C0 (12:1 to 39:1) Electric Locking 6 in-Line
Brand: Graph Tech Guitar Labs Ltd.
SKU: 29499712929815
Price: 160.94 USD
Availability: InStock
Rating: 4.96 (25 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$160.94

Quantity

Color

Black

Quantity

Description

RATIO® patented gear technology
RATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.
From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1.
We balanced the gear ratios to each string simplifying t...

Reviews

5.0

25 ratings

Great addition

This was an easy swap to upgrade to locking tuners. Excellent quality and tuning stability seems rock solid so far.

Anthony · June 27, 2025

Perfect

These are what I have been waiting for, Awesome.

Dwayne · July 20, 2025

Best tuners ever

These are the best tuners I've ever used. The ratio concept is brilliant! The ONLY thing that would make these better is if they were auto-locking instead of manual screw-down. Otherwise, they're perfect! Unless you're committed to vintage spec on a vintage instrument, you should get these tuners!!!

Ryan · December 17, 2024