High quality: Our trumpet mouthpieces are made of brass, offering a comfortable touch and excellent sound. The thick silver-plated surface is easy to wipe and maintain. Value Pack: The package includes 3 trumpet mouthpieces (1 x 7C, 1 x 5C, 1 x 3C). This set meets various performance and practice needs. Precise Size: The mouthpieces come in three sizes, ranging from small to large, with precise specifications for outer rim, cup depth, inner diameter, and backbore. Engraved markings allow for quick identification of each type. For beginners, the 7C is recommended as it is easier to produce sound. As lip strength improves with practice, players can progress to the 5C and then the 3C, which is commonly used by professional trumpet players. Application: These mouthpieces are compatible with most standard trumpets and suitable for use in schools, concert halls, bars, homes, band practice areas, and other settings. Color: Silver Material: Brass Package Contents: 1 x 7C Mouthpiece 1 x 5C Mouthpiece 1 x 3C Mouthpiece Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error is +/- 1-3 cm.