The classic blade bait, the Heddon Sonar remains a deadly option whether cast, trolled, or jigged through the ice. Its tight, vibrating action triggers a strong feeding response from most freshwater species. The Sonar's adjustable-action design provides 3 different line-tie holes, which allow you to vary the tightness of the wobble according to the conditions. Use the front hole to run faster and tighter for aggressive fish, the rear hole for slower, wider action, without the need to change your lure!