Jo-Ral TPT-6 Aluminum Trumpet Plunger Mute This mute was designed to be more comfortable to hold than traditional plungers, but offers the same unique sound Made of the highest quality hand-spun aluminum Jo-Ral mutes are designed and tested to perform evenly in all registers Made of the highest quality hand-spun aluminum Jo-Ral mutes are designed and tested to perform evenly in all registers