Yamaha Marching F Mellophone YMP-204MS

Key: F, Valves: 3 pistons, Bell size: 268.5mm (10-9/16), Bore size: 11.73mm (0.462), Weight: 1.6kg (3.5lb), Length: 438mm (17.24), Finish: Clear lacquer / Silver-plated (YMP-204MS)
 
The 204MS features a rich vibrant sound with excellent tonal projection. Yamaha R&D conducted extensive field tests with leading bands, and has redesigned the bracing for a more open free-blowing feel. The overall balance has also been changed making it more comfortable to hold and play, while the slide configuration has been reworked improving both intonation and tone qualities.
 
Specifications
Level Marching Mellophone
Key of F
Bore M: 0.462
Bell Diameter 10
Leadpipe Gold Brass
Bell Material Yellow Brass
Finish Clear lacquer (YMP-204M); Silver-plated (YMP-204MS)
Pistons/ Valves (3) Nickel-plated, nickel alloy
Mouthpiece MP-14F4
Case MPC-203M
Options Included: Mouthpiece adapter included