Constructed from high grade brass (80:20) the JP378 tuba is a durable good sounding 4 piston instrument. The large 19" bell and .730" bore also contribute towards an improved sound quality and increased acoustic projection. It features a carefully configured fully compensating system ensuring that accurate tuning and alternate fingering is possible. Includes a Sterling designed leadpipe, 3 water keys and a high quality case. Gold Lacquer finish.