XCalibur Xrk 75 -- Old meets new in this lure, the One Knocker. Its single forged tungsten/lead internal ball is reminiscent of old Cotton Cordell One-Knocker Spots, except the Xrk 75 is louder and less subject to wear because of the hardness of tungsten. The One Knocker weighs 3/4 ounce and comes in six colors. (www.xcaliburtackle.com)