Description:Material: This guitar reed uses zinc alloy as the material, which is wear-resistant and durable, so it can be reused for a long time. Replacement Parts: The guitars keys tuner is suitable to be used as a spare part to replace an old or damaged part of electric guitars. Easy Installation: The spare part of the musical instrument is small and lightweight, so it can be installed on stringed instruments. Wide Application: Stringed instrument knob knob holder has a wide range of applications, which can be used in most types of electric guitars and acoustic guitars. Gifts: Instrument replacement accessories are suitable as a gift for friends or families who like to play the guitar, no matter they are a professional or a beginner. Specification: Color: Silver, Black, Gold. Material: Zinc alloy. Image Size: Width: Approx. 19.5mm / 0.76 inch. Mounting Hole Size: Approx. 3.15x3.8mm/0.12x0.14inch. Note:There may be several color distortions due to different computer resolutions. There may be a slight error due to different manual measurements. Package Included: 6pcs Guitar Reed Knob Grips .6pcs Mounting Screws .6pcs White Plastic Mounting Sleeves .6pcs Metal Mounting Fittings.