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. The main function of the guitar string buckles is to increase the pressure angle of the strings, increase the pressure of the strings on the pillow, and make the sound stronger. Features -Color: Silver. -Material: Metal. -Size: About 1.30X0.70X0.20cm/0.51X0.28X0.08inch. - metal materials have the effect of preventing rust, and you will use them for a long time. -They have excellent workmanship, good gloss, and are not easy to fade or break. -They increase the angle and tension of the strings and the sound of the guitar. -Good guitar head pressure and chord buttons for your choice, with screws, easy to install. -This is a practical guitar accessory that can serve you well. Suitable for individuals or music shops. Package list: 10 sets x guitar buckles