Description:Replacement parts: This electric guitar tuning peg can be used as a spare part to replace the old or broken keys accessory of the guitars. Compatibility: This guitar key tuners kit has a wide range of usage, which can not only be used in electric guitar, but also can be used in acoustic guitars. Easy to install: The stringed instrument machine head is equipped with screws, which is more convenient for you to install on the guitars. Wide usage: The musical instruments replacement part can be a professional repairing part to adjust the keys or tone of the instruments so that can improve the sound quality. Fit people: The guitars tone tuning accessory is suitable for the musician player and the guitar beginner and you needn't go to the instruments shop if you want to adjust the key. Specification:Gear ratio: 1:18.Location: 6R. Color: Silver, black. Note:There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes:6 Pieces Guitar Tuning Pegs(with 6 Pieces Ferrules, 6 Pieces Threaded Bushing, 6 Pieces Screws).