Made from durable metal, these cello accessories are built to last. The wolf tone mute effectively suppress the problematic frequencies that cause wolf tones, while the mute helps to soften the overall sound. This set is ideal for both professional cellists and students looking to improve their instrument's performance. Features -Color:Assorted Color -Material:Metal, Rubber -Size:3.50X3.50X1.30cm/1.38X1.38X0.51in -Size:2.20X1.30X0.80cm/0.86X0.51X0.31in -Wolf tone elimination: the wolf tone mute are engineered to reduce disruptive tones, ensuring a smoother and more harmonious sound -High compatibility: designed to fit cellos, this accessory set is versatile and adaptable for various instrument models -Quick and simple setup: easy to use mounting system allows musicians to install and adjust the accessories in seconds -Travel-friendly design: lightweight and compact, this set is for musicians who frequently travel or perform in different locations -Improved sound precision: enhances tonal accuracy and clarity, helping cellists achieve their desired sound effortlessly Package list: 2 x cello wolf tone mute 1 x rubber mute