This Valve Trombone is in the key of Bb and features a beautiful nickel body, 482" bore, 8" bell, nickel finish. It includes a 12C mouthpiece and a hard shell durable case with tough vinyl cover and side pocket for carrying those essential accessories. This Trombone set also includes a handy shoulder carrying strap. It plays exquisitely with superb sound quality and is a high quality Trombone at an affordable price! It has features found in much more expensive instruments. Each instrument has been quality tested in the U.S.A.