i recieved a broken 1950s jazz guitar which needed refinishing and repair, it had no hardware so i set about finding the parts to finish it, having purchased graphtech nuts before i knew they were of good quality and worth a go at putting on my newly restored guitar, it was incredibly easy to fit, just drop it in the right place on the guitar, make sure intonation is correct and adjust the string height, the bridge adjusts to any archtop shape as the bridge has some flex to it which is genius, now i can pretend to be george benson but without the talent, i play lots of wrong notes and call it jazz, poeple have actually commented on how great the guitar sounds acoustically, it has nice harmonics and you can feel the body resonate, im sure this is because of the bridge transferring the string noise through the body so well, graphtech make great parts if you need upgrades or replacements, a great purchase