Graph Tech TUSQ Slotted Martin-Style Acoustic Guitar Nut, 1.69-inch (PQ-M169-00)

The Graph Tech PQ-M169-00 is a pre-slotted, flat-bottom replacement nut for Martin-style acoustic guitars and others with a 1.69-inch nut width. It is made from TUSQ, a man-made material with consistent density that Graph Tech offers as an alternative to bone or ivory. The pre-cut string spacing and slots let you install, restring, and play without filing. Graph Tech states TUSQ transfers string vibration efficiently for added harmonic resonance and sustain.