The PT-4000-00 is a great option to replace and upgrade the nut on just about any guitar. It is not slotted so this will need to be done. Black 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. Black 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. Dimensions: 48,39 x 4,88 x 9,52 mm.