Professional Portable Trumpet Mute Wear Resistant Small Straight Practice Mute for All Kinds of Trumpets Musical Instrument.Trumpet straight mute is made of aluminum alloy superb workmanship;Premium composite cork pads for long term useLength: 14.6cm/5.75inch;Inlet diameter: 2.8cm/1.10inch; Outlet diameter: 9.1cm/3.58inchFit all types trumpets;this aluminum mute has a nice sound and does not distort pitch.It produces the type of sound that is considered the standard in cup mutes for most jazz musician.Your family members neighbours and pet will not be disturbed any more Enjoy your practice with this Trumpet mute.Professional Rhythm Trumpet Mute Accessory Parts. Lightweight Aluminum Trumpet Practice Mute. Small Straight Practice Mute for Beginner. Trumpet Straight Mute for Instrument Practice. Practice Trumpet Straight Mute for Jazz Music.