Cressi Inox Finned Shaft Ø 7mmInox Finned Shaft 7mm Spear shaft has a Tahitian style tip with a single flopper barb that hugs the spear shaft for maximum penetration, yet provides superior holding power once it penetrates the fish. Cressi Inox Spear Shafts are notched and ready to use on spear guns. Flopper style spear made with spring stainless steel, heat treated to increase hardness and prevent bending. The original Cressi shark fin tabs have a smooth finish capable of holding