Greg Black Trombone Mouthpiece Reference price in Japan: ¥36,960 (tax included) Size: 4.5GS Inner rim diameter: 25.95mm Cup: Medium Weight: Regular weight Throat: .277" #1 This size is recommended for those who find Bach's 4G a little too large, but 5G too cramped. The throat is the same .277" as the Greg Black New York model, ordered directly. It has a slightly smaller throat, making it easier to produce a more focused tone than the standard model. I ordered this along with another weight, and I've only tried this mouthpiece once, so it's in excellent condition with no scratches. I don't think this throat size is often stocked in Japanese musical instrument stores, so how about taking this opportunity? Feel free to comment for product inquiries, price reductions, etc. Type: Trombone Accessories/Parts: Mouthpiece