Features a 1/4" nut driver on one end and a handy screwdriver at the other. Please note that Nylon Series and older Big Baby truss rods are accessed through the soundhole and require our longer wrench.<br><br>Truss Rod Wrench. We generally recommend that you consult an experienced repair technician for truss rod adjustments, but if you know what you’re doing, a truss rod wrench is a handy tool for tweaking the amount of relief in your neck. Use it to adjust for different string gauges or to dial-in the right feel for your playing style. Material: Metal<br><br>Package Contents: 1 x Wrenches<br><br>Only the above package content, other products are not included. Note: Light 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.