Designed for Both Professionals and Beginners: This comprehensive kit is perfect for piano technicians, music schools, and hobbyists looking to fine-tune their piano tuning skills. It includes everything needed for both grand and upright pianos. High-Quality and Cost-Effective Manufacturing: Crafted by expert manufacturers, this kit offers exceptional value with its fine craftsmanship and dependable quality. It's designed to withstand the rigors of regular use while maintaining tuning precision. User-Friendly with Tuning Software Compatibility: Achieve professional tuning results. This kit works seamlessly with popular piano tuning software, allowing even novices to expertly tune their pianos with ease and precision. Innovative Octagonal Tuning Wrench: The included wrench features a versatile 2-head, octagonal design, specifically engineered for easy access and adjustment of piano's corner shaft nails, enhancing tuning efficiency and comfort. Material: Metal Color: As shown Package Contents: 1 x Piano Tuning Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.