This is a plastic trumpet. Perfect for outdoor practice or for children. I felt that the "pitch" (intonation), which is a weak point of this type of trumpet, is stable compared to other manufacturers. [Included Items] ・Carry case ・Strap ・Mouthpiece (2 sizes) ・Piston buttons for children There is no sticking. The pistons move slower than a regular trumpet, but that's how it was when I bought it. This is a used item, so please refrain from purchasing if you are concerned or if you are a perfectionist.