Very good quality for the price. Have the same nut on two basses and I am really happy. The adjustability is what I need for both basses I have installed to. On the Curbow 52 it was an almost direct fit, for the BTB 455 it needed some customising. Also, BTB has a cavity bellow the nut, from where you have access to adjust the truss rods. This scares a bit, but after a month after the installation I have not experienced any problem yet.