Kristal Fishing AFC-4 Invisible PlanerThis sinker is equipped with a bigger sized sinking fin than the AFC 2. By exerting less resistance, this model can be towed at higher speeds than the AFC 2 model. If, on the other hand, it is used simultaneously together with the AFC 2 or AFC 4 it will sink to a more extent than the latter allowing you to distribute the lines at different depths ensuring a more effective search for herds of predators and minimizing the risk of crossing lines. .