Vencetmat 5mm Truss Rod Wrench, Allen Wrench Tool Ball End for Martin Acoustic Guitar Truss Rod Adjustment And Deep or Narrow Truss Adjustment.
- For martin or other guitar which couldn't reach it with a regular hex wrench truss rod adjustment..
- Two way L-shape truss rod adjustment tool..
- Made of carbon steel, durable and highly wear-resistant..
- Set for most kinds of acoustic guitar, electric guitar and bass..
- For locking hexagonal screws on the bridge, adjusting the guitar neck..