Zuker ZG Grass Tuna Lures provide a different look and feel to a fish and that may be the reason it is such a good producer. They may not look like much, but they act differently. Down deep where it counts, the Zuker Grass Lure is a very effective lure that catches fish! The body is filled with a coarse nylon material instead of more traditional feathers. This lure has proven itself one of the most productive trolling lures for both Albacore and Yellowfin tuna.