The Kershaw Scallion is about 20% larger than the Kershaw Chive line and perfect for just about anything! The 1620FL spring assisted knife features aluminum handles and a matte finished 420HC blade (partially serrated). You can activate the spring assist by pushing the ambidextrous thumb stud or by pushing down the "flipper" on spine of the knife (when the knife is closed). Stainless pocket clip & safety. The new 1620FL features a frame lock design like the Leek series. Oder versions of the knife have had liner locks.