this l-shape tuning wrench is a must-have tool for musicians who play lyre harp, autoharp, lap harp, zither, cello, and other small stringed instruments. designed for easy and precise tuning, it ensures your instrument produces the perfect sound every time. the compact and durable design makes it convenient to carry in your music bag. whether you're a beginner or a professional, this tuning spanner is an essential accessory for maintaining your stringed instrument. ideal for harp tuning key, piano tuning wrench, and autoharp tuning wrench applications. perfect for music tuning accessories, it helps you achieve accurate tuning with minimal effort. the wrench fits comfortably in your hand, providing better control while adjusting the strings. a reliable tool for autoharp strings, piano tuner tools, and cello tuner needs. enhance your musical experience with this high-quality tuning keys tool. suitable for lyre harp, lap harp instrument, and other stringed instrument tuning requirements. a practical addition to your collection of music tools and accessories.