The Graph Tech TUSQ Nut Blank is a new design of blank nut for Gibson-style guitars and many acoustic guitars (3/16" nut Gauge). The Graph Tech PQL-4011-00 is permanently lubricated. Final sanding and slotting are required.

TUSQ XL is engineered from the same material as TUSQ and is impregnated with PTFE, which is five times more slippery than graphite. It has all the tonal benefits of TUSQ, bringing out the hidden harmonics of your guitar all while improving tuning performance.