Chinese Muiscal Instrument Suona Whistle Mouthpiece for horn pout accessory. Made of durable plastic, good tightness, not easy to leak air. These mouth are ready to use ones, so no need to be further processed. It is a ready to go one, no need for trimming. Suona mouth is consumable, needs to be replaced regularly. Specification: Material: Plastic Large Size(L x W): Approx. 21 x 11 cm / 8.3 x 4.3 inch Small Size(L x W): Approx. 10 x 9 cm / 3.9 x 3.5 inch Package Includes: 5 Pieces Suona Whistle(L) 5 Pieces Suona Whistle(S) Note: Due to the manual measurement, please allow 1-2mm differences in size. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.