The Bill Lewis ® Knock-N Trap® Rat-L-Trap Lipless Crankbait features the same natural vibrating action as the original Rat-L-Trap®. Made for use with a variety of species, including black bass, white bass, yellow bass, and crappie, among others, the Knock-N Trap hard bait lure has earned its place in history as the most productive lure ever. The Knock-N Trap® is equipped with Mustad Triple Grip hooks for unrivaled versatility.