Jo-Ral TRB-1C Copper Bottom Trombone Straight Mute

Alum/Copper.

The acoustic design of Jo-Ral mutes creates an exciting tonal quality that results in near-perfect intonation. They are made of spun aluminum, and have been tested to perform evenly in all registers. Many models are also available with brass bottoms ” offering a slightly warmer, moderately dark sound, or with copper bottoms which produce an even warmer, darker, rich sound.