Trumpet cup mute dimension: overall length is 135 mm; Inlet diameter is 18.5 mm; Outlet diameter is 61 mm?? compatible with almost types trumpet</br>Durable and light: practice trumpet mute is made of metal aluminum material?? lightweight?? durable?? sturdy for use?? easy to carry</br>Good trumpet practice supplies: the silent trumpet mute would lower the sound but still keep its pitch?? producing standard sound like cup mutes</br>Effective silencer: trumpet silencer is good for late night trumpet practice and do not disturbed family members?? neighbours and pets while enjoying your practice</br>Easy to clean: come with a cleaning cloth?? enabling you to wipe clean the trumpet straight mute easily and can also wipe other products as you want</br></br>Product Description</br></br><br>Mudder practice trumpet straight mute silencer aluminum with cleaning cloth?? silver <br> <br>Durable and light material: <