Thomann SHF-300 Bb-Sousaphone MKII, 3 valves, body and bell made of Fiberglass, size: ring inside 53cm diameter, ring outside 78cm diameter, bell 66cm diameter, bore: 18,50 mm, weight: 7,2kg Korpus; 2,7kg bell, incl. case 23 kg, incl. mouthpiece and case