Corrosion-resistant full-tang Titanium blade. Elegantly curved 4-inch cutting edge. Serrated edge and large line-cutting notch. Lightweight locking sheath with push-button release. Quick-adjust sheath straps. Available with blunt or pointed tip One of the biggest problems with dive knives is corrosion and Atomic solves that issue with a beautifully crafted and honed full-tang Titanium blade.