French Horn Mouth Pressure Relief Valve Breath Trainer to Correct Blowing Mouth Shape Exerciser

Product:Horn Pressure Relief Valve Decompression Trainer
Made of high-quality copper material, the surface is gold-plated and silver-plated, and the overall tone has been further improved Less effort, more accurate and better sound

Colour:Gold
Material:brass
Size:8.7x2.7cm,Thin head thickness: 0.7cm

Package Contents:
1 * pressure reducing valve

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.