Knight and Hale Harold's Favorite 3 Turkey Call (Diaphragm Set) 4-M Diaphragm will do it all, but is a great call for locating with loud cutting sounds Includes 5-P Diaphragm, 4-P Diaphragm and 4-M Diaphragm 5-P Diaphragm produces great loud raspy hen talk 4-P Diaphragm produces medium raspy turkey talk but can be used to create that ever-important soft talk that's needed to bring them in close Standard Performance