The Rapala Clackin' Rap lipless crankbait creates a distinctive sound and vibration profile that allows fish to zero in. The sound chamber, which is noticeably visible from the side of the lure, uses a single large BB. As the single large BB hits the walls of the sound chamber it produces low frequency clicks that travel further and deeper down, calling to fish from greater distances. The Rapala Clackin' Rap is 3 1/8 inch long, weighs 7/8 ounces, and is outfitted with a front VMC SureSet belly hook and a black nickel treble hook in the front. Aside from the sound chamber the Clackin' Rap also features a translucent textured body with internal holographic foil that flashes as the lure swims through the water.