LOTUS 11XS mouthpiece for trumpet; material: nickel silver; nickel silver mouthpieces are suitable for: lead, commercial & studio playing, adding extra life to duller-sounding horns; this mouthpiece offers an incredibly rich tone for such a flat cup; the sound remains wide open from the highest possible note to the low F#; tonally, this cup offers a radiant, brilliant and sparkling sound, yet with enough core and body; Bach F cup adapted to Lotus 11 rim, Schilke 5A4A, Yamaha 6A4A; bore: 3.6mm; silver plated