This instrument tool is made of high-grade copper material, which is natural, safe and durable. It is characterized by copper material with high durability and resistance to deformation. Fine workmanship and good texture ensure practicality. Features -Color:Silver -Material:Copper -Size:2.31X2.31X0.83cm/0.91X0.91X0.33in (Top Trumpet Covers) -Size:2.17X2.17X0.80cm/0.85X0.85X0.31in (Lower Trumpet Covers) - Made of high-grade materials, this product is durable and practical. Trumpet Piston Caps are not easy to break and deform. - Strong and wear-resistant, you don't have to worry about it being easily deformed. - The appearance is simple and generous, in line with most people's aesthetics. - It is a practical tool that can fully meet your needs. A great accessories for trumpet. - The creative design will give you a wonderful experience and bring you a good mood. Package list: 2 x Top Trumpet Covers 2 x Lower Trumpet Covers