Key of Bb. .459" bore, 4-7/8" bell, nickel-plated pistons, 1st valve slide thumb hook, adjustable 3rd valve slide ring, gold epoxy lacquer finish. Includes case. Its many features make it a standout student horn. Bore size, honed pistons, a nearly seamless laser-fused pluzuma welded bell, nickel silver joints, and pressure formed tubing make it both durable and easy to play.