Features:Bell cover ideal for trumpet, alto saxophone, bass clarinet, cornet. Size S is suitable for instruments with a diameter of about 7.5-8.5cm (2.95-3.3''), size M is suitable for instruments with a diameter of about 9.5-10.5cm (3.7-4.2''). Size L is suitable for instruments with a diameter of about 12-13.5cm (4.8-5.3''). XL is suitable for instruments with a diameter of about 14.5-15.5cm (5.7-6.1"). The bell cover is made of elastic material and washable fabric that can be easily put on and taken off without tie rings. The bell cover helps slow the spread of aerosols during exercise. Excellent playability and easily passes through the bell. Specification:Material: Bronzing FabricType: L/M/S/XLS-Inner Diameter: 5cm/1.97inch, Outer Diameter: 7.5cm/2.95inchM-Inner Diameter: 5.5cm/2.16inch, Outer Diameter: 8cm/3.15inchL-Inner Diameter: 6.5cm/2.56inch, Outer Diameter: 9.5cm/3.74inchXl-Inner Diameter: 8cm/3.15inch, Outer Diameter: 12cm/4.72inchColor: GoldPackage Included: 1 x Saxophone Horn Damping CoverNote: The actual colors of the item may be slightly different from the pictures shown on website due to many factors such as monitor brightness and light brightness. Please allow a slight manual measurement deviation for the data.