The Agility Model Marching French Horn in Bb has perfected projection, pitch and response for the Marching Field. It has 3 Fast acting Monel Valves that are all hand lapped. The 10-inch bell utilizes a large throat design for maximum projection, and a balancing bore of .472". The Tempest Marching French Horn has a balanced and stable design to alleviate tension and strain. It is supplied with a hard case, mouthpiece, and a 5-years warranty.