120:1 Gear Ratio: Featuring accurate 20:1 gear ratio with sealed lubrication, these tuning pegs guarantee accurate tuning, great for the meticulous tuning needs of fine bass guitar and jazz bass guitar 2Metal Construction: Crafted from excellent metal, these guitar tuning pegs have rusting resistance and erosion resistance, ensuring long lasting performance and reliability even under rigorous use 3Open Tuning Pegs: Embracing a classical open style design, these tuners seamlessly blends with beauty while providing functionality tailored for 4 string bass, adding a touch of decor to your instrument 4Versatile Compatibility: Suitable for both fine bass and jazz bass guitar, these tuners offer wide compatibility, allowing musicians across genres to enjoy the benefits of its accurate and reliable tuning 5Secure Mounting: Equipped with sturdy fixing screws, this 2R2L black bass tuner set offers effortless installation and seamless replacement, ensuring a stable tuning experience during your musical sessions 4 x Tuners 4 x Screw Caps 4 x Washers 4 x Screws