Made of metal, exquisite workmanship, sturdy, wear-resistant and Suitable for most guitar and bass neck truss rod, bridge, knob, nut locking adjustment. Compatible with most types of acoustic, electric and bass guitars. Various wrenches are perfect for guitar neck bridge nut locking screw adjustment. Guitar wrench-- compatible for your folk guitar and classical guitars truss rod adjustment. Truss rod wrench repair tool-- metal material, also . Colour:Yellow Material:metal+wood Size:12.5x12.5x0.5cm Package Contents: 1 x Wrench with wooden handle 1 set x wrenches Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.