The use of the right tool to perform the basic adjustments of your instrument is more than useful and necessary. 

The Music Nomad Truss Rod Wrench 5mm is the perfect tool for adjusting Truss Rods located deeper in the soundhole. The durable steel construction with black nickel finish is designed to work again and again. The long 4.75-inch arm combined with the ball end design allows you to adjust Truss Rods found in popular acoustic guitars that use a 5mm hex wrench, such as all MARTIN® guitar models except for DSS-2018, OMSS-2019, and Modern Deluxe Series. The ergonomic handle provides additional length, comfort, and control, making handling easier. This is the Music Nomad quality - raising the bar high in instrument care products.