Jo-Ral TPT-2C Copper/Aluminum Bubble Trumpet MuteJo Ral's Bubble mutes create a distinctive meaty buzz sound that is unmatched. Their unique acoustic design makes for near perfect intonation through the entire range of your instrument. The mute also features: A lightweight spun aluminum construction Great for cool and fusion jazz genres Pliable cork that has been neoprene enhanced for a lasting grip and durability Made in the USA