The Bill Lewis Knockin' Hammer Trap builds on the popular Hammer Trap line by offering a loud knocking sound rather than the traditional Tri-Tone noise. This unique action is known by trap anglers to make the difference between a good day and a great day on the water. Available in ⅜ oz and ⅝ oz sizes, and offered in 12 classic Bill Lewis colors, the Knockin' Hammer Trap is a versatile and effective lure that adds a new dimension to any angler's tackle box.