Yamaha YTR-8310 Z 03, Bb Trumpet, ""Bobby Shew"" model, M-bore (11,3mm), L Tuning Arc, 127 mm Bell, Further development of the YTR-6310 Z, Newly developed technology for the production of the bell, ""French bead"" cup rim, Xeno design, Wider spectrum of timbres, Light construction, Lacquered with gold lacquer, Includes case and mouthpiece