Problue Titanium Dive Knife Titanium blade. Blunt safety tip. Surf belt ready. The Problue Titanium Dive Knife is the corrosion-proof safety knife built for surf anglers, kayakers, and divers who need a reliable cutting tool that doesn't rust out. The 4.5" titanium blade resists everything saltwater can throw at it — doesn't pit, doesn't seize, doesn't corrode — with a blunt safety tip that won't punch through waders or a wetsuit if you fall. Built-in line cutter and serrated edge handle braid, leader, and emergency cuts cleanly. The positive snap-lock sheath with rubber straps keeps it secure on a surf belt or wading belt where you need it. Key Features 4.5" titanium blade — corrosion-proof, holds an edge in saltwater Blunt safety tip — won't puncture waders, wetsuits, or yourself Serrated edge for cutting fishing line and rope Built-in line cutter notch Molded ergonomic grip for secure handling wet Snap-lock sheath keeps the knife in place during rough water Heavy-duty rubber straps mount cleanly on surf belts and wading belts Specs Blade Length 4.5" Blade Tip Blunt (safety) Blade Material Titanium Sheath Snap-lock with rubber leg straps Best For Surfcasting belt, wading belt, kayak, dive Why We Like It If you've ever pulled a stainless dive knife out of the sheath after a season on the surf and watched the blade come out spotted with rust, you understand why titanium matters. The Problue Titanium doesn't rust — full stop. The blunt safety tip is the other reason this is on so many surfcaster belts: in a tangle situation or an emergency where you're cutting yourself free, you don't want a point. We sell more of these to surfcasters than to actual divers, and at $80 it's an easy decision for the safety upgrade.