The Niiyama Lures Aku/Skipjack is a brand new head shape just released in late 2018. Very limited numbers of these will be produced due to the time it takes to make each one - These are are very uniquely handmade and hand-painted one by one and therefore no one Aku head is 100% like the other. During testing stage, Blue Marlin were eating these lures up like crazy and has a very good shot at becoming Jon's first Grander Marlin lure. Extremely thick and heavy with 14" skirt saddles and just over 11 ounces in weight, these large lures will handle even the roughest of sea conditions. Has the profile of a bullet shaped head, so it swims very straight. Each head is belly weighted for perfect balancing. Recommend 500-700lb leader with no less than 300lb.