Color as shown Size: 20.4 x 13.9 x 5.9 cm Weight: 250 grams The uniquely shaped design of L makes it easy to use. With piano tuning, you can tune the piano without damaging the strings. Effective Range: The 100cm long instrument tuning key is made of soft wool. Working in tandem with other tools, it cuts two octaves at once without fraying strings. The effective piano tuning tool can save you a lot of time. Stable Mutes: 2 mute handles and 4 long taper mutes are made of high quality rubber. It has excellent elasticity. And it won't deform after being compressed while having good mileage. Professional piano tuning can achieve piano tuning very well. Convenient and economical: Piano Tuner Tool allows you to repair the piano by yourself without waiting for a mechanic to arrive. And with piano tuning, you can learn new skills while saving money. Piano tuning is a great way to learn new skills while saving money. Widely Used: The piano tuning key is a perfect kit. The piano tuner tool is ideal for trainees, students, teachers, trainers, professional piano tuners, or anyone who wants to learn how to tune a piano.