This Scallion s handle is pure stainless steel, which enables a built-in a frame lock. When the blade is opened, a part of the handle, or frame, moves into place behind the blade, locking it open and ensuring that it can t accidentally close during use. The frame lock is an exceptionally strong blade lock. The second lock is the Tip-Lock. It s a slider that locks the tip of the blade inside the handle until you release it, which ensures the knife won t accidentally open during transport. A great all-stainless-steel look, blade security, and assisted opening.