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Terrain 365 ™ has teamed up with Prometheus Design Werx to offer you a special edition of Invictus knives. This variant known as Invictus-AT GEN2 (all terrain) includes a Terravantium ™ blade, titanium plates, bushings, pivots and bearings. The pivot bearings are ceramic, which makes these folding knives 100% non-ferrous, non-magnetic and rustproof.