Mute for practicing at home. High-quality, handmade, and provides excellent soundproofing. Complete handmade based on subtle acoustic design. Produces high-quality sound that satisfies the high demands of professional musicians around the world. - Brand: BEST BRASS - Model Name: SOUND TRANSFORMER - Made in: Japan - Material: Aluminum - Features: Soundproof design There are some minor scratches due to it being a used item, but I think it's in good condition. Thank you.