Description de chez Amazon USA : - What it fits : The PQL-5010-00 fits many Fender style electric guitars with a 1/8 inch slots. It is pre-slotted for a quick and simple install. - Improve Tuning: TUSQ XL is engineered from the same material as TUSQ and 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. - No Dead Spots: TUSQ XL is consistent from piece to piece, and within each piece, to offer you harmonically rich tones without the problems associated with natural materials. - Easy to install: All Graph Tech nuts have a little extra length and height to ensure a good fit to your guitar. Sand the bottom of the nut for height adjustment and the ends, so ensure a flush fit. - Expertise: Designed and Manufactured by Graph Tech Guitar Labs, the largest nut, saddle and bridge pin Manufacturer in the world. We are so sure you ll love our product that we offer 45 day money back guarantee.