The Cranky Nitro Halftail Diver is solid plastic with through wire construction. The bait has a front to back wobble, belly roll and a lot of tail action. It runs 6 to 8 feet deep when casting and deeper when trolled. It features a replaceable rubber tail that is turned onto a heavy-duty, custom-made spring with a centering pin for easy installation. Order yours at http://www.h2otackle.com