Greg Black Trombone Mouthpiece Reference price in Japan: ¥44,000 (tax included) Size: 5GSD Inner Rim Diameter: 25.95mm Cup: Medium Deep Weight: Regular Weight Throat: .277" #1 This size is recommended for those who find Bach's 4G a bit too large, but 5G too tight. The throat is .277", the same as the Greg Black New York model, and was purchased by direct order. I ordered this along with a different weight mouthpiece, and I've only tried this one 2-3 times, so it's in beautiful 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 or price reductions. Type: Trombone Accessories/Parts: Mouthpiece