Feature: 1. 20:1 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 2. Metal 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 3. Open 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 4. Versatile 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 5. Secure 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 Specification: Item Type: Bass Guitar Tuner Material: Zinc Alloy Gear Ratio: 20:1. Package List: 4 x Tuners 4 x Screw Caps 4 x Washers 4 x Screws