Characteristic Phillips Head Truss Rod Wrench, HOSCO ORIGINAL This “+” shaped wrench makes adjusting traditional necks a lot easier.As compact as 11mm in length with 9mm diameter head gives you an easy access tothe cross-slotted nut in a narrow space.You don’t have to take the neck off any more ! Related posts: H-GNC WRE-I14 WRE-4.0J WRE-I14J