The Mustad Heavy Duty J-Assist 1 Rig is designed for heavy jigging. Featuring a heavy-duty solid ring tied to the wide gap Mustad hook with high quality PE and Kevlar materials. The assist hook is connected to the top end of the slim jigging lure to improve hookset, as the fish often strikes at the top end. Another benefit is less snags because of the absence of the traditional tail treble. The assist hook is dressed in white tinsel to attract attention, creating a striking point. These hooks were tested over a period of 2 years by Mustad's pro staff before they were launched. by design.