Skip to product information
1 of 2

1 total reviews

7 STRINGS: 7-in-line Ratio Lefty Electric Locking Machine Heads (PRL-8721-Lx7, Select Finish)

7 STRINGS: 7-in-line Ratio Lefty Electric Locking Machine Heads (PRL-8721-Lx7, Select Finish)

PRL-8721-LC7

702725244492

Regular price $187.77 USD
Regular price Sale price $187.77 USD
Sale Sold out
Select Finish
Select Button Style

RATIOĀ® patented gear technology
RATIOĀ® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.

From Low B to High E 48:1, 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 RATIOĀ®, 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

Ā 

The PRL-8721-Lx7 isĀ a left-handed set of Locking RATIOĀ® Calibrated Machine Heads for electric guitars that use 7-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.

Ā 

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

Ā 

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: 0.910ā€ (23mm)
Weight per single machine head: 0.083lbs (38g)
Weight per set: 0.581lbs (266g)
String diameter up to 72 gauge
Includes 7 machine heads, mounting screws, and bushings
Includes complimentary 4 sets of aluminum mounting plates

UPGRADE TO PREMIUM PLATED INVISOMATCH View full details
5.0
Rated 5.0 stars
Based on 1 review
Total 5 star reviews: 1 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
1 review
  • AM
    Andy M.
    Verified Buyer
    I recommend this product
    Rated 5 stars
    4 weeks ago
    Graph tech machine heads

    Fast and easy to install. Great quality, my guitar stays in tune better than it ever has

Reviews LoadedReviews Added