Jo-Ral Trumpet Straight MutesThe acoustical design of Jo Ral Trumpet Mutes creates an exciting tonal quality celebrated by even the most discerning musician. Choose from a host of different styles, each with a unique, dynamic sound guaranteed to add even more dimension to your tone. Made of the highest quality hand spun aluminum, Jo Ral Trumpet Straight Mutes are designed and tested to perform evenly in all registers. Jo Ral mutes also feature neoprene enhanced composite cork