Item Type: Piano Tuning Mute_x005F_x000D_Material: Metal, Rubber_x005F_x000D_Product Size: Approx. 21cm / 8.3in 1SPECIFICATIONS: Includes 10pcs piano tuning mute tools with triangular block design for flexible operation, which are stable and reliable. 2RUBBER BLOCK: These piano tuning mutes are made of excellent rubber, with good elasticity, wear resistance and scratch resistance. 3METAL HANDLE: These piano tuning tools come with metal handles for easy grip, and the top ring design is convenient for hanging. 4FOR PIANO TUNING: With these tools, you can complete the piano fixation work yourself and learn some skills at the same time. 5APPLICABLE SCENE: Ideal piano tuning tool for apprentice, trainer, professional piano tuner or anyone who wants to learn piano tuning.