sshhmute Practice Mute French Horn Med., French Horn Practice Mute, Suitable for medium-sized bells, Made of ABS plastic with a cork seal, Accurate tuning across the entire range, Helps to develop and open the throat muscles and allows better airflow, Minimal blowing resistance, For precise playing in all pitches, Weight: 190 g, Dimensions (base width x neck width x height x seal width): 139 x 35 x 190 x 66 mm, Colour: Black/Blue