The PQL-6060-00 is the perfect option to replace and upgrade the nut on your Epiphone guitar. It is also a great option for many other common acoustic and electric guitars. It comes pre-slotted to make for a quick and easy install. 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 drastically improving tuning performance.