SKU: 76588708792

Graph Tech PRN-2731-B0 Ratio Tuned Machine Heads (Classic Style/Black)

Sale price$127.79 Regular price$141.99
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Ships within 48 hours · Estimated delivery Sep 3 - Sep 8

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Description

Graph Tech PRN-2731-B0 Ratio Tuned Machine Heads (Classic Style/Black)The PRN 2721 and PRN 2731 are right handed sets of RATIO calibrated machine heads for electric guitar that use 6 in line tuners. It has a two pin housing that can be used as is or with our patented InvisoMatch mounting plates. 4 different sets of brushed aluminum InvisoMatch mounting plates are included to make installation on most guitars quick and precise using your existing screw mounting holes. Specifications Patented RATIO gear technology RATIO

The PRN-2721 and PRN-2731 are right-handed sets of RATIO® calibrated machine heads for electric guitar that use 6-in-line tuners. It has a two-pin housing that can be used as is or with our patented InvisoMatch mounting plates. 4 different sets of brushed aluminum InvisoMatch mounting plates are included to make installation on most guitars quick and precise using your existing screw mounting holes.

Specifications

  • Patented RATIO 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 have balanced the gear ratios at each chain simplifying the adjustment process
  • With RATIO®, a half turn is a half step
  • Each string responds the same to any tuning setting. Predictable, precise tuning on every string
  • Gear ratio: unique for each string position - one turn-one tone
  • Required dowel hole diameter: 13/32" (10 mm)
  • Rope Post Diameter: 0.236" (6mm)
  • Length from rope post to rope hole: 0.890" (22.6 mm)
  • Weight per single machine head: 0.066 lb (30 g)
  • Weight per set of six: 0.393 lb (179 g)
  • Rope diameter up to 72 gauge
  • Includes 6 machine heads, mounting screws and sockets
  • Includes 4 free sets of aluminum mounting plates
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 76588708792

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Amazon Customer
Grantham, US
★★★★★ 4
Toddler loves them
Flavor Name: World Explorers Variety Pack, Size: 3.5 Ounce (Pack of 6)
I like the variety of flavors that I don’t get with standard food pouches. They’re like the food we eat, but they’re safe for my daughter which gives me peace of mind. I would buy more, more often, if it weren’t for the price.
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Reviewed in the United States on September 15, 2024
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Amazon Customer
Battle Creek, US
★★★★★ 5
Child approved
Flavor Name: World Explorers Variety Pack, Size: 3.5 Ounce (Pack of 18)
Child loved all the flavors.
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Reviewed in the United States on April 21, 2026
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S+B
Dallas, US
★★★★★ 5
Taste amazing with good quality ingredients
Flavor Name: World Explorers Variety Pack, Size: 3.5 Ounce (Pack of 18)
Love that I can expose my 6 month old to so many flavors so early on. Way better than rice cereal! I have tasted all flavors myself to see what my baby is eating and everything tastes amazing!!! Just bland, but thats good for babies ♡ good for use crunchy and silky Mamas
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Reviewed in the United States on August 4, 2025
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Blessed
Charlottesville, US
★★★★★ 5
Quality and Taste Your Little Is Sure To Love!
Flavor Name: World Explorers Variety Pack, Size: 3.5 Ounce (Pack of 18)
Toddlers can be super finicky, but the textures and flavors of these Serenity easy to use meals are worth every penny! I appreciate the flavors in this variety pack are exactly what our little loves! When you care enough to give the best, then Serenity is the choice.
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Reviewed in the United States on June 15, 2025
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Ben F.
Natrona Heights, US
★★★★★ 5
Good product, poor directions.
Color: Black, Size: B-88''W-4 Panel
The quality of the product was better than most at this price. The directions could have been much better even though I have an engineering background.
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Reviewed in the United States on September 1, 2025

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