The Phelps Female/Juvenile Howler Diaphragm Predator Call was built on the Phelps medium frame this call uses two pieces of .003 latex for all your female and young male coyote vocalizations. This call was built for all your female howls but is a great female challenges as well as pup distress. FeaturesProduces female howls and pup distressLatex diaphragmTwo reed design