6 In Line Ratio Lefty Electric Locking Machine Heads Mini Contemporary Button (select finish) - Graph Tech Guitar Labs Ltd.
6 In Line Ratio Lefty Electric Locking Machine Heads Mini Contemporary Button (select finish) - Graph Tech Guitar Labs Ltd.
6 In Line Ratio Lefty Electric Locking Machine Heads Mini Contemporary Button (select finish) - Graph Tech Guitar Labs Ltd.
6 In Line Ratio Lefty Electric Locking Machine Heads (Select Finish and Button Style) - Graph Tech Guitar Labs Ltd.
6 In Line Ratio Lefty Electric Locking Machine Heads (Select Finish and Button Style) - Graph Tech Guitar Labs Ltd.
6 In Line Ratio Lefty Electric Locking Machine Heads (Select Finish and Button Style) - Graph Tech Guitar Labs Ltd.

6-In-Line Ratio Lefty Electric Locking Machine Heads (PRL-8721-L, PRL-8731-L, Select Finish and Button Style)

PRL-8721-LG0
5.0
Rated 5.0 stars
2 Reviews

Select Finish
Select Button Style

SCIENCE BEHIND RATIO:

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 the tuning process.

With RATIO®, a half turn is a semi-tone!

Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

RATIO Machine Heads explanation video

 

Description:

The PRL-8721 and PRL-8731 are a left-handed sets of Locking RATIO® Calibrated Machine Heads for electric guitar that use 6-in-line tuners.

It has a two pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab].

4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.

 

6-in-line tuners set  Ratio Tuned Machine Heads: The New Standard In Tuning Technology

 

Specification:

Gear ratio: unique for each string position - one turn-one tone
Peg holes diameter required: 13/32" (10mm)
String post diameter: 0.236" (6mm)
String post length to string hole: 0.910” (23mm)
Weight per single machine head: 0.083lbs (38g)
Weight per set of six: 0.496lbs (225g)
String diameter up to 72 gauge
Includes 6 machine heads, mounting screws and bushings
Includes complimentary 4 sets of aluminum mounting plates

GUIDES:

Staggered Ratio Measurements.pdfRatio Installation Guide.pdfRatio Installation Guide Video

REVIEWS:

Moss Hart

Reviewed in the United States on February 15, 2020

Amazon Verified Purchase

 

5.0
Rated 5.0 stars
Based on 2 reviews
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
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2 reviews
  • AM
    Ann Marie D.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    1 month ago
    Warmoth Reverse Warhead Application

    Well constructed, easy to install, work exactly as advertised. Tuning is easy and fast. Used on right handed, reverse headstock, Warmoth Warhead. Used with string tree (Black finish, contemporary).

    Was this helpful?
  • AP
    Alexander P.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    1 month ago
    This might get expensive!

    After fitting these to my Ibanez I immediately ordered a set for my Les Paul. They were so easy to fit and made such a difference. I can see me installing them on my other guitars too.

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