Gallery
Description
Features
Reviews
Q&A
Dunlop

collapse expand iconDescription

Most acoustic guitars require truss rod adjustment through the sound hole, sometimes past one or two braces to an unseen nut. As a result, normal hex wrenches are not practical. CruzTOOLS GrooveTech Sound Hole Truss Rod Wrenches were designed specifically for this application, with blade length optimized to fit within the sound hole opening and long enough to reach even the most recessed nuts. A specially designed ball-end tip allows easy seating into the nut, and a pro-grade alloy using tight manufacturing tolerances prevents any chance of damage. Finally, an oversized screwdriver-type handle provides confidence when making truss rod adjustments.

Two sizes are available: 4mm fits most makes of guitars, while 5mm is primarily for Martin guitars.
Dunlop GrooveTech Sound Hole Truss Rod Wrench 4mm

collapse expand iconFeatures

  • Designed specifically for acoustic guitars with truss rod nuts inside the sound hole
  • Special ball-end tip allows for easy insertion into truss rod nut
  • Professional grade
  • Screwdriver-style handle provides confident grip
  • Two sizes 4mm and 5mm fit most acoustic guitars

Featured Articles

collapse expand iconReviews

5

6 Reviews

100%

of respondents would recommend this to a friend

Filters
Describe Yourself
  1. Experienced3
Pros
  1. Easy To Use3
  2. Functional3
  3. Good Quality3
  4. Improves Sound1

Reviewed by 6 customers

  • It works

    5

    submitted4 years ago

    bySteve

    fromOmaha, NE

    It fits. It works

  • Good to have for fine tuning your instrument

    5

    submitted6 years ago

    bySqueejay

    fromVA

    Most of us know, already, but for those that don't, there are TWO different common sizes for truss rods. Make sure you order the appropriate size for your needs.

  • Quality tool - Good Value

    5

    submitted6 years ago

    byDon

    fromSarasota, Florida

    Good tool.

  • GrooveTech Sound Hole Truss Rod Wrench

    5

    Verified BuyerVerified Buyer

    submitted7 years ago

    byRussell

    fromundisclosed

    Reaches adjustment nut easily and eliminates potentially marring your prized instruments! Well built and comfortable a good value, should last forever.

  • Does The Job

    5

    Verified BuyerVerified Buyer

    submitted8 years ago

    byMICHAEL

    fromundisclosed

    It does just what it is supposed to do, easily and conveniently. Reasonably priced. What else could you want?

  • works as said

    5

    Verified BuyerVerified Buyer

    submitted8 years ago

    byBOBBY

    fromundisclosed

    sturdy tool

  • Previous
  • 1
  • Next

collapse expand iconQ&A

Have a question about this product? Our expert Gear Advisers have the answers.

  • submitted4 years ago

    asked byNaef

    fromMount Vernon, NY

    Which size truss rod for a Fender Newporter?

    Which size truss rod for a Fender Newporter?

    Open Reply - Thomas
    I’m sorry, the manufacturer has not made that information available.

  • submitted5 years ago

    asked byChris

    fromundisclosed

    Will this fit a Fender CD-60S?

    Will this fit a Fender CD-60S?

    Open Reply - Kenneth
    This will not be compatible

  • submitted5 years ago

    asked byMC

    fromValrico, FL

    Does this wrench work on Martin guitars?

    Does this wrench work on Martin guitars?

    Open Reply - Ronald
    Yes it will.

  • submitted6 years ago

    asked byHarry

    fromCalifornia

    I need truss Wrench that works on a Gibson SG solid body electric. Do you have one that works? This one is for a acoustic sound hole Thanks, harry

    I need truss Wrench that works on a Gibson SG solid body electric. Do you have one that works? This one is for a acoustic sound hole Thanks, harry

    Open Reply - Kenneth
    Yes, we have a truss wrench set