The Allora ATB-250 Series student trombone is a premium student trombone that features a .500 bore for a quick response and excellent tone plus an 8 yellow brass bell for excellent response and projection. Featuring a standard leadpipe and a durably braced standard handslide the ATB-250 was designed for the beginning trombone student. The ATB-250 comes complete with an upgraded nylon polyfoam case a small shank mouthpiece and a three-year warranty. A used or extraordinarily cheap instrument may lessen your child's likelihood of continuing in music. With the Allora Student series you get a quality instrument that will play in tune withstand student treatment and inspire pride of ownership. Allora instruments are carefully manufactured according to specifications and development accumulated over many years. The result is a line of instruments that play well are durable and possess a satisfying tone and dynamics capability all with a price that makes it much easier to get involved with music.