Compatible with most 4-string electric basses - Open-gear bass tuners designed for precise, fast response, smooth operation, and stable tuning to improve intonation and overall instrument stability. Package contents - Includes open-gear bass tuner pegs - A reliable replacement for most basses and guitars Unique design and construction - Made from high quality metal with a distinctive plum blossom knob for an attractive and comfortable turning and adjustment experience - Provides improved stability and a refined aesthetic Left and right handed use - Suitable for 4-string setups with nickel-plated alloy hardware - Automatic winding design, enhanced brightness, volume, and tonal clarity - Great for both right- and left-handed players Practical use scenarios - Upgrading a 4-string bass to improve tuning stability and tone on stage or in the studio - Replacing worn or incompatible tuners on a bass or guitar to restore smooth operation - Custom instrument projects or DIY upgrades for 4-string basses and compatible instruments Notes - Keeps compatibility with most 4-string basses and many guitars, offering a solid replacement option with open-gear construction and reliable performance