The Phelps EZ SUK'R Cow Elk Call 3-Pack Replacement Reeds gives you the ability to produces a variety of crisp, realistic cow elk sounds with your EZ SUK'R cow call (not included). Easy to install, this pack includes a blue latex reed for calf and young cow sounds, a natural latex reed for young-to-middle aged cow sounds, and a black latex reed for middle-aged to mature cow sounds. Pack of reeds to use with an EZ SUK'R cow call Blue latex produces calf and young cow sounds Natural latex produces young-to-middle aged cow Black latex produces middle-aged-to-mature cow sounds Easy to install