Made of high-class ox bones, the noise is small, and it can create better guitar tone. It serves as a better string support to provide more vibration and a better upgrade in tone and sustain. With sturdy, lightweight, wear-resistant, durable features, it is a must-have accessory for your guitar. It is a perfect present for your friends and families who own guitar, they will like it very much. Features -Color: White -Material: Ox bone -Size acoustic guitar lower nut: About 8.00X0.85X0.30cm/3.14X0.33X0.12inch -Size acoustic guitar upper nut: About 5.20x0.60x0.85cm/2.04x0.23x0.33inch -Size folk guitar lower nut: About 7.20x0.30x0.90cm/2.83x0.11x.0.33inch -Size folk guitar upper nut: About 4.30x0.60x0.90cm/1.69x0.22x0.33inch - Wear resistant ox bone material with extraordinary hardness, ensures its practicality. - Small appearance, with durable material, it is convenient to use, easy to install and remove. - With our string nuts, your guitar will have a better tone and perform well. - The thin grooves on the string nuts are specially designed to fix your guitar string, professional to use. - After careful polishing, the surface is smooth, so it will not damage your guitar strings. Package list: 4 x guitar string nuts