Improve the tone of your acoustic guitar immediately with this matching pair of real buffalo bone nut and matching compensated saddle for acoustic guitar. Both the nut and saddle have standard widths used by most performance guitar makers such as Martin, Taylor, Gibson, Ibanez, Alvarez and many others. Both items can be hand sanded to the desired string action height for your guitar. A sample of 150-grit sandpaper will also be included. Nut measures 43 mm (W) x 6mm (D) x 9 mm (H). Saddle measures 72 mm (W) x 3mm (D) x 12 mm (H)