♬Crafted from genuine dense cattle bone for superior tone claritys and vibrations transfer, enhancing guitar sound with richer resonance and improved frequency response. Ideal for professional musicians. ♬Natural bone construction provides greater strength than nut, reducing tuning instability and string slippage. Highly wear resistant for long lasting without frequent replacements. ♬Precisely machined to standard dimensions for perfect guitar compatibility (6 string electric models). Ensures seamless installation and optimal playability for both beginners and professionals. ♬Lubricating properties minimize string friction during bends and vibratos. maintains instrument balance while improving high/low frequency response across musical genres. ♬Natural bone materials contains not harmful . Delivers unique tone characteristics for sound expression. Includes 2 pieces for convenient replacement or customization needs.