Primos Final Approach Shock Caller Goose Call Primos has been trusted by individuals for decades. Products that are made of quality material and designed to withstand the toughest environments. Trust the Brand that others in the field use and don't settle for less. Quality materials used for all primos products 100 percent designed and tested for the toughest situations and environments Short-reed Canada Goose call Easy to blow Machined aluminum collar Call with minimal back pressure Patented ditches on sounding board prevent sticking due to moisture