The Curtiss F3 knife is designed with the S.P.O.T. pivot and IKBS bearing system. The S.P.O.T. pivot, which stands for Stop Pin Over-Travel, prevents over travel and movement by enhancing the lock bar stabilization. It has a large diameter that stops the pivot from rotating. The knife features milled scales and a pocket clip, giving it a distinctive appearance and texture. If you're interested in Wharncliffe style knives, we have a variety of options available. Don't miss out on this special flipper knife!