Senko Action with Better Hook Holding PowerThe Yamamoto Pro-Senko 5 inch is designed with a thicker head area to help it stay on the hook when used with Gary&';s Swim Jig or other shaky-head style jigs. It still delivers the original Senko&';s fish-catching action while its unique design helps it cast like a bullet and reach the strike zone quickly. Thicker head area for better hook hold Works with swim jigs and shaky-head style jigs Retains original Senko action Casts like a bullet Gets into the strike zone quickly