Camillus Folding Knives are made from the very best steels with Carbonitride Titanium Blades. These blades are 10x harder than untreated steel and will stay sharper for a longer period of time, while resisting rust, stains and corrosion. Included in the folding knife category are knives that feature Marlin Spikes along with the CUDA® and Lev-R-Lok® lines of quick-action blade knives.