sshhmute Practice Mute for Tenor Trombone; made from lightweight ABS plastic with cork seal; gives accurate tuning throughout the range; helps to develop and open the throat muscles to give better air flow; has minimal back pressure, enhancing pitching and accuracy; lightweight 180g; dimensions: 139 mm x 47 mm x 198 mm (Base width x Neck width (incl. seal) x Height); colour: black/blue

Fits Practice & Whisper mutes for Bass Trombone / French Horn Large / Tenor Horn- sshhmutes are very durable, while the mute may not need to be replaced, the seal sometimes needs to be replaced to ensure continued good sound quality, so you don't have to replace the entire mute- Material: Cork