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. Made in the USA.