Rapala Clackin' Rap 07 Fishing lure, 2.75-Inch, Helsinki Shad Lipless Clackin' Rap creates a distinctive sound and vibration profile that allows fish to zero in. Running Depth: Variable The translucent textured body. The uniquely designed sound chamber features a single steel ball and external metal discs that transmit a distinctive clackin' sound with maximum vibration Internal holographic foil.