This is a mouthpiece cap for a B♭ clarinet. I purchased this new and unused on Mercari, and my child used it for about 3 months. There are some signs of use, such as minor scratches that don't show up in the photos, but there is no damage, noticeable dirt, or functional problems. I bought it without the box, so the exact model number is unknown, but it says "GF" on top. I'm not very knowledgeable about instruments myself, but please be aware that depending on the type of ligature, the cap may not close completely. It will be sent without the box, wrapped in bubble wrap and placed in an envelope. - Color: Black - Brand: GF - Type: Clarinet Mouthpiece Case