Arnolds & Sons always manufactures in consistently high quality thanks to the most modern production techniques. The mouthpieces are exact copies of well-known American originals. The boiler depth decreases with ascending number. Since the Arnolds & Sons trumpets mouthpieces are CNC milled, manufacturing tolerances are absolutely low. This ensures that the quality level remains identical for the same sizes. The high-quality silver plating ensures a long durability, the surface structure and the mouthpiece.