The 1660CU Leek features a stonewash finished blade and a copper handle.The Kershaw Leek is one of the sleekest and most popular assisted opening knives ever produced. It features Kershaw's patented SpeedSafe technology. Give the ambidextrous thumb-stud a push and the knife takes over opening the blade the rest of the way. This is an ideal one-handed opener with a reversible pocket clip and a tip safety lock so the blade won't fire by accident.