Pinkerton"s design includes a fixed blade knife that works well for both utility chores and personal protection. The Persian has a sweeping trailing-point blade and comes complete with a molded Kydex sheath. The Flux is an all steel, skeletonized knife. Dirk Pinkerton"s personal defense knives reflect a very different approach to knife design and function. His Meyerco production knives faithfully capture the magic of his designs and make it available at very affordable prices.