🎺SATISFACTION: 1x 7C, 1x 5C, 1x3C, the package includes 3 piece of trumpet mouthpiece. Can meet the requirements of difference occasions and stages of learning of the performer | 🎺 C refers to the Throat of the mouthpiece, 7c is the smallest, 3c is the biggest, this set of 3 specifications mouthpieces is the best gift for lovers or beginners, can solve the difficulty of choosing the mouthpiece also meet the performance needs of different occasions | 🎺 Compatible with most standard trumpets such as Yamaha, Bach, Conn, King, etc. Make playing a trumpet so much easier. | 🎺 Copper material, durable and sturdy.Providing a bright tone for your trumpet. | 🎺 Product Size: Approx. 8.7*2.7*2.7cm/ 3.43*1.06*1.06"