This is the XS Scuba Neuro Titanium Full Tang Scuba Diving Knife Features: High quality 4.5 in. (114 mm) titanium alloy blade is lightweight, strong, corrosion-resistant and holds a sharp edge Available with either clip point or blunt tip design The line notch cutter is ideal for cutting monofilament line The two-inch serrated edge along back of blade is great for cutting rope Full tang runs the length of the handle for strength and rigidity. It protrudes out the back to provide a hammering function Self-locking sheath provides an audible click" to confirm knife engagement Attachment point on back of handle for added security Includes two 22" (560 mm) long rubber leg straps with quick release buckles The XS Scuba Neuro Knife Titanium by XS Scuba, has a 4.5" (114 mm) 304 titanium blade that is excellent for corrosion-resistance and holds a sharp edge. The knife comes standard with a clip point or blunt style blade with line notch cutter."