The Megatone mouthpiece was developed to meet the needs of many trumpet players who wanted a thick, powerful tone. By more than doubling the mass of the mouthpiece's exterior and slightly widening the throat, it achieves a deep tone with less resistance and easier control. It has a wide dynamic range across the entire register from pp to ff, and delivers a warm, powerful sound without distortion. Model / 3B Inner diameter: 16.30 mm A large cup produces a warm and rich sound. *This product is a store display and trial item, so the outer box (packaging) may have dents or damage, and there may be minor scratches on the shank of the mouthpiece itself. However, it is a B-grade (outlet) special price item that is in good enough condition to be used without any problems during play. Product images are for illustrative purposes only; please be aware of this beforehand.