The 2012-00 nut is a standard Fender style blank nut with a curved bottom. It is a perfect option for someone who wants to replace or upgrade the nut on a Fender style guitar with a curved bottom nut slot and want to slot the nut themselves. Available in two colors. TUSQ XL is designed to boost guitar tone and performance. This precision engineered nut is made with a specially formulated material which 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.