Double rotor intermediate level bass trombone. Inline, independent valved tuned to F and Gb (D in combination). Standard 0.562" (14.27mm) bore, 10" (254mm) rose brass bell, open wrap F and Gb attachments, lightweight slide, chrome-plated inner slides, new design linkage, clear lacquer finish, Conn 1.5G mouthpiece, deluxe woodshell case. An excellent choice for the player who desires a good contemporary bass trombone without the price tag. Full warranty. Made in USA.