This project is a mute stick, used to tune musical instruments. The is used to ensure great endurance and high precision, which helps to maintain the accurate performance of the piano, so as to provide you with a better experience. The piano tune of the perfect tuning mute kit is fixed. Features -Color:Assorted Color -Material:Felt, cloth, rubber, metal -Size:15.00X2.20X2.20cm/5.89X0.86X0.86in -In addition, during use, only the front volume is changed, and the piano sound quality is not changed. -Made of high-class materials, durable and , you can use it with confidence. -The perfect accessory for you to practice piano. Can be given as a gift to your friends. -Flexible and durable, the piano will not be damaged during installation, providing you more convenience. -This is a useful tool for piano tuning and repair, making it a good assistant in your playing life. Package list: 1 x wrench 2 x silencers with handle 4 x rubber wedge mute 1 x temperament strip 1 x bag