Description Product Description •Key: Bbb •Size: 3/4 •Bore: .661" •Bell: 14-3/8" upright yellow brass bell •Bell throat: Medium •Valves: Three top-action, nickel-plated, nickel alloy pistons help achieve fast, effortless fingering •Gold brass leadpipes: Gold brass is extremely resistant to wear and corrosion, and hen used in a leadpipe, it ensures long-term precision •Convertible leadpipe: The reinforced convertible leadpipe for marching allows the instrument to be played in concert and marching settings. The marching leadpipe also has an extra water key to facilitate drainage while marching. The marching leadpipe can be adjusted so the tuba is held on either the left or right shoulder. •Clear epoxy lacquer: Microscopic, electrically-charged particles of lacquer are attracted to and deposited evenly on the surface of the instrument carrying the opposite charge. This produces an exceptionally thin, uniform coating that can be oven-hardened for maximum durability without compromising the instrument's sound. The sound produced is a solid, somewhat harder sound than silver-plated finish.