brass horn mouthpiece pressure reducer that makes playing easier and more consistent. CNCmachined for a smooth cup profile and precise fit, this pressure reducing valve helps control air pressure, refine embouchure, and correct common blowing habits so players can improve tone and endurance. Key benefits Reduces exertion while playing by lowering required mouthpiece pressure, helping achieve a freer and more relaxed embouchure. Adjustable pressure size to match player skill and preference, allowing gradual progression from beginner to advanced technique. Improves accuracy and tonal clarity by stabilizing airflow and reducing excessive pressure on the lips. Durable brass construction with golden or silver plated finish for reliable performance and a polished look. Features CNCmachined brass mouthpiece section for consistent cup shape and smooth edges. Builtin pressure reducing valve with easy adjustment to control breath resistance. Designed specifically for round horn mouthpieces and compatible with similar brass instrument mouthpieces. Size approximately 8.7 x 2.7 cm, package weight approx. 126 g. Package contents 1 pressure reducing valve for horn mouthpiece Practical use scenarios Practice sessions: Use during daily practice to build endurance and develop a stable embouchure with less fatigue. Lessons and technique work: Teachers and students can use the valve to correct blowing habits and focus on tone production and breath control. Performance preparation: Try the device during warm ups to maintain consistent airflow and reduce tension before concerts or recitals. Notes Color options: golden plated or silver plated finish. The listed color is silver. Please allow 1 to 2 cm variance due to manual measurement. Actual item color may vary slightly from photos depending on monitor settings.