The Ridgeback External Reed Bugle is our number one seller! The Ridgeback is made for those guys or gals that have a hard time, or just don't care for mouth reeds. There is no diaphragm reed required. You have to simply blow into the mouthpiece, and you will produce amazing cow and calf calls with ease. Easily produce bugles that sound realistic to blend in with both the bulls and cows vocalizations.