The PQL-4000-00 is a great option to upgrade or replace the nut on just about any guitar, Bass or stringed instrument. It has been partially shaped with a top radius so most of the work has been done. All you need to do is final fit and slotting. It is a common nut blank for Gibson guitars along with many other acoustic or electric guitars.
TUSQ XL and Black TUSQ XL nuts are designed to boost guitar tone and performance. These precision-engineered nuts are made with a specially formulated material that couples the strings' vibrations to the neck and brings out the hidden harmonics and richness in every note. It is based on the highly resonant TUSQ man-made ivory but is impregnated with PTFE to improve the tuning performance of the guitar.