Primos Elk Select 4 Call with Case Quality materials used for all primos products 100 percent designed and tested for the toughest situations and environments Whether you are a professional, recreational user, or even casual, primos will fit the mold for all types of people Sentry Plate Single (Model No. 158) Cow, calf, and spike bull sounds Ivory Plate Single (Model No. 159) Cow, calf and satellite bull sounds Imperial Plate Double (Model No. 160) Cow and herd bull sounds Hyper Plate Double (Model No. 161) Estrus Cow and raspy herd bull sounds Call Case