The Shaker is the product of several years of designing, prototyping, tank testing, field testing and design tweaking. It marries the heart and soul of the Fin-S Fish with best tail action you"ve ever seen, and is molded in a special, extra-durable plastic formulated for the rigors of salt water fishing, yet soft enough to produce the subtle tail shimmy fish like walleyes and bass respond to in fresh water. The 4½" lure is designed to mate perfectly with the 4/0 hook series of LunkerGripTM Heavy Duty Pro Fin-S heads. The 3¼" version fits both the light tackle and 2/0 hook models of the same series, as well as the standard light tackle Fin-S heads. The Shaker"s tail action is unique. Instead of just the wobbling tail common to such lures, the Shaker features action that "swims" the whole body with a side-to-side roll as well as maximizing the shimmy of the tail. Field testing has proven this action to be incredibly effective with the consumers whose votes should count the most -- bass, blues, weakfish, redfish, pike walleye and their assorted finny relatives