The Martin Sound Hole Truss Rod Wrench for Acoustic Guitar features premium materials and allows you to make safe truss rod adjustments through your soundhole with ease.

Featuring premium materials for a professional grade instrument setup, this elegant ergonomic design ensures you get accurate truss rod adjustments for your prized acoustic guitar. Designed specifically to reach inside Martin acoustic guitar soundholes and adjust with ease, this wrench features an extended length right angle and ball end tip purpose built for the task. With a proudly displayed Martin logo, the comfort grip handle assists as you make drastic or micro adjustments. Available in two sizes, depending on your acoustic guitar model (please see below.)

The 4mm truss rod wrench can be used on the following models: * DSS and OMSS Models * Modern Deluxe Series * SC-13E

For other models, please the 5mm truss rod wrench.

Whether you are a luthier, guitar tech or hobbyist, the Martin Sound Hole Truss Rod Wrench is sure to come in handy.

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