Description
Anyone who’s tried to dial in neck relief on an acoustic knows the real challenge isn’t the adjustment — it’s just reaching the nut. Acoustic builders love to bury truss rod access deep inside the body, and a standard hex key just won’t cut it. That’s where the CruzTools GTAW5 earns its spot in the gig bag.
Sized at 5mm and built primarily for Martin guitars, this wrench is designed specifically to snake through the sound hole and land on the nut without drama. The precision ball-end tip gives you a bit of angle forgiveness, so you’re not fighting to line things up in a tight, dark space. Extra length on both blade segments means you can actually get proper leverage even when the nut sits well back inside the body, and the oversized handle lets you feel exactly how much you’re turning — critical when you’re making small, careful moves on a truss rod.
While this one’s built for acoustic guitars, it’s the kind of tool that earns a permanent spot in a working musician’s kit alongside their bass gear — because when a setup emergency hits before a gig, you want tools that fit the first time, not a handful of mismatched hex keys.
- Precision ball-end tip for easier alignment in tight spaces
- Oversized handle for confident, controlled adjustments
- Professional-grade construction
- 5mm size, fits primarily Martin guitars
Keep your acoustic playing true without the frustration — this wrench makes sound-hole truss rod adjustments a straightforward part of your setup routine instead of a struggle.






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