W.H.F.-Trombonemouthpiece-Cup O/JS 6 -heavy-

W.H.F.-Trombonemouthpiece-Cup O/JS 6 -heavy- diameter: 26.00 mm The O/JS shell produces a dark, soft timbre, while a 7.3 mm bore provides the necessary transparency. To make the sound of this voluminous shell tangible, back bores S5, K5 and A5 are recommended. The - O - in front of the slash stands for open series and is especially recommended for American-style trombones. The larger bores of this mouthpiece series take into account the wider scale length of the instruments.