This product is a set of three vintage pre-owned piston valve cornetts by the brand Conn. Made of brass, these silver-colored cornets have a Bb key and are in usable condition. Perfect for musicians looking to add some unique flair to their brass collection, these piston valve cornets are sure to provide a warm and rich sound for any performance. Might be used for trumpets as well, not sure, I’m not an expert in this field. I inherited these.