Features: Embouchure Trainer: Through practice, targets precise muscle self training, which let you use the instrument more proficiently. Functional Use: The trumpet mouthpieces can exercise lip muscle endurance, also practice mouth strength and fix mouth shape. Usage: Use both ends, pull one end, exercise lip biting force and lip muscle strength concentration. Do not use for long because you could hurt yourself. Material: Saxophone embouchure trainer is using durable Metal material, which has the characteristics of corrosion resistance and long service life. Service: Your satisfaction is our priority. If you are not satisfied with our product or have any questions, please to contact our. Specifications: Material: Metal Color Options: 3 Colors are Available as Shown in the Picture. Package Weight: approx.33g Size: approx.63x17x17mm/2.48x0.66x0.66in (More Size Detail, Please See Photo.) Package Includes: 1Pc Embouchure Training Device note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!