This is a trombone mouthpiece, Silky 45B type (for small bore), made by Kobo Isle Rich. I purchased it as a used item. It was very beautiful with platinum plating, so I bought it as a used item and added it to my collection. Platinum plating is currently very expensive. I am selling it this time to organize my collection. ■ ISLERICHE (Isle Rich) made Silky 45B type for small bore ■ Equivalent to Silky 45B, but the shank length is 4mm shorter. This was made because the shank length of Silky is longer than general mouthpieces, so it was made to match the general length of Bach, etc. ■ Plating: Platinum plating It feels good on the mouth and is also suitable for metal allergies. ■ There is no genuine box due to the used item, but it will be packed securely and sent. Notes There are minor scratches on the throat (see the circled part in the photo), but it does not affect the performance at all, but please refrain from purchasing if you are concerned.