These items are some guitar head pressure chord buttons, made of metal, they are not easy to be paint-shedding and rust. They increase the tension of the Angle and chord of the string; Fine workmanship, high gloss, easy to use. Features - Color: Golden - Material: Metal - Size: About 1.20X3.50X0.20cm/0.47X1.38X0.08in - Help to lessen the stress on the guitar strings, reducing the wear on the strings for longer life of the strings. - Improve your guitar playing, which protects your strings and keeps the length of the guitar. - Retain the string perfectly and reduce the string friction to save string, and more accurate. - Replace the new guitar string tree to prevent the string from fraying, thus extending the string's service life. - A good selection for gift to those who are a professional guitar player, electric guitar learner and more. Package list: 16 x gaskets 16 x stand 16 x screws