Yamaha YBL-822G, Bb/F & Bb/F/D Xeno basstrombone, offset valve section, 14,3mm (0.563") large bore, 241,0mm (9-1/2") goldbrass bell, chrome plated nickel silver inner slide, yellow brass outer slide, removable 2nd valve, clear epoxy lacquered, incl.case and D.Yeo signature mouthpiece