The Fender T-style truss rod adjustment wrench gives you precise control over your bass guitar's neck relief. You can dial in the perfect amount of bow along the neck to suit your playing style. The 3/16" ball-end hex key fits snugly into the truss rod adjustment nut on Fender American Deluxe, American Standard and Highway One series basses, giving you a solid grip to make small tweaks or complete neck adjustments. The rubberized handle provides a non-slip surface so you can apply the needed torque. Whether you need to tighten or loosen the truss rod, this dedicated wrench makes the job quick and frustration-free. For bassists seeking ultimate playability and tone, the Fender T-style truss rod adjustment wrench is an essential tool to have in your gig bag or case.