Features: 1.The guitar nut and saddle are made of bovine bones, which have fast sound transmission speed, elasticity and moderate hardness. 2.Pure copper string studs can enhance the graininess and extend longer sound, while the ebony string studs have a thick sound quality and the sound is not easy to diverge. 3.The exterior of the string nails and the guitar nut and saddle are very glossy and easy to clean, and you only need to wipe it with a dry handkerchief. 4.These guitar nut, saddle and studs are small in size and light in weight, and are easy to install and remove. 5.These guitar tools are designed to help fix and adjust the strings to withstand the tension, so as to obtain a better sound.specification:Item Type: String Stud Kit Material: Ox bone, copper, ebony String Stud Size: Approx. 2.8 x 0.8cm / 1.1 x 0.3in Guitar Saddle Size: Approx. 72 x 3 x 9mm / 2.8 x 0.1 x 0.4in Guitar Nut Size: Approx. 43 x 6 x 9mm / 1.7 x 0.2 x 0.4inPackageList:6 x String Stud1 x Guitar Nut1 x Guitar Saddle