Zink ATM Duck Call Poly Single Gunsmoke. All polycarbonate calls come equipped with an easy-blow sound system so even novice callers can produce undeniably realistic sounds. Specifications for Zink ATM Duck Call Poly Single: Manufacturer: Zink Fabric/Material: Poly Country of Origin: USA Features of Zink ATM Duck Call Poly Single Same calling abilities and design as the original ATM Green Machine Available as a single call or in Power Pak with instructional DVD Custom Hunter with cocobolo wood Great introductory option Package Contents: Zink ATM Duck Call Poly Single Zink ZNK-ZNK6024: ATM Duck Call Poly Single Gunsmoke