Euphonium/Trombone Mouthpiece Randefalk R3S Cup Inner Diameter: 26.00 mm Cup Outer Diameter: 39.50 mm Bore Size: 7.20 mm Cup Depth: 37.00 mm Length: 83.00 mm Backbore: 10.70 mm Large Shank Finish: Gold Includes a presentation box and original drawstring bag. The current standard specification has a separate cup and shank, but this one is integrated. Randefalk is very popular recently, especially in brass bands. It is not distributed domestically, so please consider this opportunity. Manufacturer's HP product introduction page: https://randefalkmusic.com/collections/moutpieces/products/euphonium #randefalk #ランデファルク #r3s #ユーフォニアム #トロンボーン #euphonium #マウスピース #ブラスバンド