Description:<br> 4mm Hex Wrench Ball End Guitar Truss Rod Adjustment Long 125mm x 75mm<br>  <br> Specifications:<br> Material: Metal<br> Type: Ball End Hex Wrench Hex Diameter: 4mm Ball End Size: 5mm<br> Wrench Size: 125mm x 75mm<br> Color: Black Quantity: 1pc<br>  <br> Features:<br> Two way L-shape truss rod adjusment.<br> Neck wrench specialized to the adjusting hole of the guitar neck relatively deep.<br> Adjust the guitar neck straight，suitable for USA Martin and most acoustic guitars.<br>  <br> Package included:<br> 1 x Hex Guitar Wrench<br>  <br> More Details: