Opt for Grover Roto-Grip Locking Rotomatic tuners to enjoy outstanding tuning consistency and enduring dependability. These tuners boast an accurate 18:1 gear ratio and a locking system that ensures your strings stay firmly anchored. Simply pass the string through the post hole, give it one wrap, and turn the thumb screw to secure it. Designed as a perfect upgrade for most conventional guitar tuning pegs, they include all required mounting components. For trustworthy tuning stability, equip your guitar with Grover Roto-Grip Locking Rotomatic tuners!