This is an upgraded version from the previous model, No. 18 to No. 20. These are twin assist hooks, 4 pieces per pack, for use with TG Baits and other lures in Ise Bay jigging. They are designed to fit compact jigs like TG baits. The hooks are Gamakatsu Kaizo Soi (Nano Smooth Coat). The assist line is Zylon Knot No. 40, looped (double) for excellent strength. The assist line length is 15mm. How about these for Spanish mackerel cutter countermeasures? You can change the hook direction to outward or inward as you like. #jigging #lightjigging #superlightjigging #SLJ #IseBayjigging #tgbait #assisthook #Spanishmackereltreatment #bluefish #Gamakatsu