The Zink Calls Poly NBG Duck Call is built for greenhead hunters who demand realistic sound and versatility. Made with a durable polycarbonate mouthpiece and barrel, the Nothing But Green (NBG) single reed design lets experienced callers mimic multiple hen mallards, creating a cone of sound that draws in even cautious drakes. Featuring Zinks Z-Cut no-stick tone channel, this call delivers a wide range of tones while preventing reed lock. Field-tested and proven effective season after season. Single reed design for versatile sound recreation Polycarbonate mouthpiece and barrel for durability Z-Cut no-stick tone channel prevents reed lock Produces a wide range of realistic mallard sounds Field-tested and perfected for dependable performance