The Jupiter JMP1101M Quantum Mark II series mellophone is designed for outstanding intonation and projection, making this instrument a great choice for competitive marching performance. Designed for maximum performance, this F mellophone features a .460" bore and stainless steel valve for smooth performance. The Quantum MK II mellophone includes a horn-mellophone hybrid mouthpiece and a wood frame case. The JMP1101M is available in lacquer or silver-plate finish.