12/497285International Classification: B63G 8/00, B26D 1/20, B26D 1/00, F42B 19/00U.S. Classification: 114 203, 83508, 83 13Abstract: The problem of penetrating through nets and other objects is solved by cutting the object using concentric cutters in which a rotatable cutter having floating teeth rotates concentrically about a stationary cutter having fixed teeth.