This is a large aluminum straight mute designed for 4/4 or larger tubas. It's made in the USA and has a brushed finish and a metal handle for easy insertion. Numerous adhesive cork and foam pads are included so the player can customize the fit to his tuba. It does make it difficult to play test in the store since the corks are user-installed, but we keep at least one in Long Beach for client testing. Norm Pearson of the LA Philharmonic uses and recommends this mute. It's similar in size to a Humes & Berg 208.