This King sousaphone is a standard sousaphone that is durable and economical for any school. It has a slightly smaller bore than the 20K and also has a removable valve section for ease of repair and cleaning. Nickel plated pistons provide smooth, quick action and unmatched durability. Silver plate finish. Heavy duty wheeled case. Specifications: Key of BBb, .687"/17.45mm bore, Yellow brass branch material and bell, 26"/660.40mm bell diameter, 3, standard stroke pistons, Satin silver plate finish, 2 mouthpiece, Molded plastic case.
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