4mm Angled Truss Rod Wrench

Truss rods are an essential part of any guitar or bass, keeping the neck straight and the instrument playing its best. Over time, changes in humidity, string gauge, and playing style can all affect neck relief, making truss rod adjustments a routine part of maintenance for electrics, acoustics, and basses alike.

This dual-purpose 4mm truss rod wrench is designed to make those adjustments quick and precise across a wide range of instruments. A precision ball-end tip ensures an accurate fit while allowing access even at an angle, helping you reach nuts that are partially obstructed or deep inside the body.

The extended blade length makes it ideal for acoustic guitars, where the nut is often located inside the soundhole or behind a brace. At the same time, it’s perfectly suited for electric guitars such as Stratocasters and Telecasters, bass necks with 4mm truss rods (including our own necks), and many other models.

An oversized, ergonomic handle provides excellent leverage and control, giving you the confidence to make adjustments safely and without damaging the nut. Durable and versatile, it’s a must-have tool for players, techs, and luthiers alike.

• Suitable for electric, acoustic, and bass guitars with 4mm truss rods
• Extended blade for hard-to-reach acoustic soundhole access
• Precision ball-end tip for accurate fit at awkward angles
• Oversized ergonomic handle for safe, confident adjustments
• Compatible with Stratocaster, Telecaster, and Northwest Guitars necks