The Camillus NS-8 Folding Knife with a 3.25” blade made of Carbonitride Titanium bonded AUS-8. Carbonitride Titanium is one of the hardest surface treatments containing titanium. The steel of this blade is bonded with Carbonitride Titanium making the NS-8 up to 10x harder than untreated steel. The handle made of Glass Filled Nylon, this material is used in many of our knives. We add glass-filled materials to polypropylene, ABS and other substrates in order to provide the strongest, most rigid handles. Lifetime Warranty.