Guitar Wrench- Truss Rod Wrench Truss Rod Allens Wrench Tool 4mm / 5mm Ball End for Martins Acoustic Guitar 2Pcs-Black 5mm-

Features: Perfect material: This Guitar Wrench Tool is made of steel material, super sturdy and durable ,not easy to break. Functional purpose: It is L-shape truss rod, convenient to insert the sound hole and adjust the neck. Perfect design: There are grooves on the end of the handshake for easy application of force, can also install handle for the wrench. Designed to the adjusting hole of the guitar neck relatively deep.  Scope of application: Martins Guitar Wrench can adjust the guitar neck straight,suitable for Martins guitar. High quality: This Guitar Truss Rod Wrench is 100% brand new and high quality Specifications: Condition: 100% Brand New Material: Steel Weight: Approx. 42-66g / 1.5-2.3oz Length: Approx. 75+126mm / 3.0+5.0in Diameter: Approx. 4 or 5mm / 0.2in Optional Type: Black 4mm, Silver 5mm, Black 5mm   Package list: 2 * Guitar Wrench Other terms on the pictures are not included.