Grover Precision at Half the Weight Even among GearNuts's most discerning peg-head aficionados, Grover's tuning machines are synonymous with stability, reliability, and precision. These 144 Mini Bass Tuners admirably carry on Grover's long-standing dedication to quality with an exceptionally precise 20:1 tuning ratio to make even the most minute adjustments a breeze. Plus, 144 Mini Bass Tuners also boast a lightweight housing and permanently lubricated sealed enclosure, ensuring that the tuning action stays friction-free for life. Lastly, 144 Mini Bass Tuners include all necessary screws and bushings for effortless installation.Grover 144 Mini Bass Tuners Features: Top-quality bass tuners, designed for instruments with a 2+2 headstock configuration Mini size reduces weight and offers a more low-profile feel Incredibly precise 20:1 tuning ratio Permanently lubricated closed enclosure all but guarantees a lifetime of friction-free tuning action Includes all necessary bushings and screws for installation