(H)NUT headless guitar headpiece Our headless guitar headpiece is entirely made of billet brass for strength and sound transmission, with the exception of the baseplate, which is in black anodized aluminum an that can be single or multiple. The string can be clamped with an hex grain that allow using single ball end strings. It can be used as a normal locking nut also in standard guitars. It comes with mounting screws and Allen wrench.