Features: Compact size and lightweight, easy to carry and use. Trombone, French horn, saxophone mouth strength exercises apply. Help to exercise your mouth blowing strength for trumpet or other musical instrument playing. Made of brass, it has good wear resistance. Nickel plating on the surface increases the life of the product. Improve the anti-corrosion ability, make the surface of the object bright and beautiful. Small and exquisite. Practice it anytime, anywhere. Specifications: Condition:100% Brand New Material: Brass Color: As shown in the picture Usage: According to the principle of mouth and breath forward, lip concentration, and closing wind, avoid pulling out of the mouth of the lips, practice gums, teeth close, teeth aligned, and lips parallel, and correct mouth shape and breath while practicing mouth strength. Practice mouth strength at the same time, fixed mouth type. Use both sides and pull one end to exercise the lip bite and lip muscle strength concentration. One's like a pencil, 10 to 20 seconds at a time. Exercise lips muscle endurance Package List: 1* Trumpet Mouth Strength Trainer