Stampo per piombi AERO, una particolare forma (modello Depositato AP2013U000004) con 4 ali.Aumentano la gittata, facilitano il recupero e limitano notevolmente il rotolamento con la corrente.
We have exploited the symmetrical airfoil, in the form in which they are made the fins, increasing lift of lead is on the air increases the range. The form with mass moved forward make it stable in flight and 4 fins help to align it also recovering well from the bottom is raised in any position, avoiding stranding with reefs, sea grass etc ..,