Primos Hunting Timberline Open Reed Wood Game Calls. The wooden barrel mellows the tone just enough to replicate the sounds of cow and calf perfectly. You control the pitch by the pressure of your bite on the call and the volume by regulating the amount of air pressure you blow into the call. You won't sacrifice sound or aesthectics with the premium wooden design of the Timberline Open Reed Just make sure when using the Timberline Open Reed call your "EEees" are high notes and your "Oooos" are low notes Remember no two elk sound exactly the same but their pitch rhythm and cadance will be simlar. Learn how to use the Primos Timberline closed reed cow call. This is one of the easiest styles of cow calls to learn and master. Specifications for Primos Hunting Timerline Closed Reed Wood Game Call: Manufacturer: Primos Hunting Additional Features: Open Reed Fabric/Material: Hardwood Features of Primos Hunting Timerline Closed Reed Wood Game Call Premium hardwood barrel Capable of higher volume calls Produces accurate estrous cow calls Package Contents: Primos Hunting Timerline Closed Reed Wood Game Call Primos Hunting PS9502: Timberline Open Reed Wood Game Calls