Graphtech PT-6643-00 Black Tusq Nut 6 String Electric 43 X 6
- Graphtech Black Tusq Nut 6 String Electric 43 X 6
- GraphTech Black TUSQ XL Guitar Nut
- TUSQ XL is based on the highly resonant TUSQ man made ivory and impregnated with PTFE, the slipperiest substance on earth, to improve the tuning performance of the guitar.