1, IMPROVED TUNING: The thickened knobs on this ukulele tuning pegs can enhance the stability and accurate tuning of the instrument. 2, METAL MATERIAL: These knobs are made of metal material, which is sturdy, durable and wear-resistant to ensure a long service life. 3, COMPATIBILITY: These knobs are designed for a variety of soprano and concert four-string models, so you can confidently upgrade your instrument without worrying about compatibility issues. 4, Elegant Appearance: These knobs feature an elegant classical design and silver finish, adding sophistication and style to your instrument. 5, EASY INSTALLATION: Installing these tuning pegs with the included screws is quick and effortless, even for beginners. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.