Dietrich Parts String Butler V1 Black/Silver

Dietrich Parts String Butler V1 Black/Silver; hardware to improve tuning stability on electric/acoustic guitars, made for guitars with 3l/3r headstocks, fixes the positions of a, d, g, b strings to a linear course through the nut so they do not get stuck, improves tuning stability and sustain, handles even extreme playing and bending, fast mounting; Material aluminum; easy and quick mounting on the position of the truss rod cover / truss rod plate; color black. with silver rolls