Next Step Up Series 3 Pack, In collaboration with legendary call maker Rockie Jacobsen, we are introducing our newest, most innovative diaphragm to date. The NSU frame is featured on three new diaphragms: The Moonphase, The Warrior, and The Monarch. The new NSU consists of a recessed latex and palate plate that places your tongue in the correct position, allowing the most novice user to understand how a diaphragm works. This is the easiest diaphragm on the market to use and fits the widest variety of palates. The original palate plate designed by Rockie Jacobsen brought a design to the market that has allowed those that have a gag reflex the ability to use a diaphragm by placing it further forward in the mouth. With the added NSU technology, it now has taken the guess work out of proper tongue placement. | Rocky Mountain Hunting Calls NSU 3 Pack Elk Diaphragm