Function: The piano repair and tuning tool is designed to adjust the local of the to achieve different degrees of overtones and change the sound qualityMaterial Composition: Crafted from quality wood and metal materials, this Piano Tuning tool ensures longevity and reliability for professional piano maintenanceCompact Design: With an approximate length of 16cm, these tools are easy to handle and maneuver during intricate tuning tasksComfortable Design: The finely polished handle of the tuning pin repair tool ensures a comfortable grip without any burrs that may hurt your handsComplete Set: The package includes a tuning pin and a wrench, providing all necessary components for effective piano repair and tuning Size Chart: tuning pin length: 16cm/6.30inch Package Includes: 1 Piano Tuning Pin1 Wrench Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.