Gold Lacquered Yello Brass, .500 inch Bore, Specially Annealed Hand Crafted 7.5 inch 85/15 Rose Brass Bell with Small Bead Bell Wire, Ultra Lightweight Model, custom taper mouthpiece, nickel outer slide tubes with rounded nickel silver crook, chromed inner slides, 24K gold-plated balance, includes JBM-12C mouthpiece and XO GL Ultralight case (KC-42GL)