Gold brass bell
The durable yet light two-piece bell is made of gold brass for a wide range of tone colors and to promote good technique and endurance.
Piston, piston caps and buttons
Highly durable monel alloy pistons as well as piston buttons and bottom caps help lengthen the life of the instrument while also maximizing sound quality. 
Tuning slides
The 2nd and main tuning slides are produced using the same method as high-end Yamaha models, which provides stability, a more refined tonal color, and added durability.
Brace
The main tuning brace lets sound more focus and hold together.