Features: Unique Design and Durability: This piano tuning wrench lever has L-shaped design made of hard steel making it durable and easy to use. High Performance Strip: With 1pc red strip mute one octave by pushing between the groups of strings with a screwdriver or flattened hammer shank. Reduce Noise: Includes 2 mutes with handle and 4 long rubber mutes without handle helps you to mute the section more easily. Also comes with 90pcs green felt balance rail punchings for piano noise reduction. Indispensable kit for piano players for piano tuning. High Value & Easy to Use: With these tools you are able to finish the piano fixing by yourself and learn some kind of new ability during this process and also money-saving. Common Use: Perfect for apprentices students or anyone wanting to learn piano tuning. Specifications: Material: Steel+rubber+wool Color: As pictures shown Applicable Musical Instrument: Piano Item Size --Wrench Lever Length: 16.2cm --Rubber Mutes with Handle Length: Approx. 20.5cm --Rubber Mutes Size: 10 * 1.3 * 1cm(L * W * Max. T) --Temperament Strip Size: 106 * 2.5 * 0.5cm(L * W * T) --Felt Balance Rail Punching Size: 22mm * 5.2mm (Dia. * T) Item Weight: 190g / 6.7oz Package Size: 21 * 12.5 * 3.5cm / 8.3 * 4.9 * 1.4inch Package Weight: 198g / 7oz Packing List: 1 * Tuning Hammer Wrench Lever 1 * Temperament Strip 4 * Rubber Mutes 2 * Rubber Mutes with Handle 90 * Green Felt Balance Rail Punchings