4 3/8" closed. 3 1/8" X50CrMoV15N stainless blade with cryogenic quenching. Unique double cone locking system automatically compensates for any possible blade play. The central pivot uses a special screw-nut. The large bearing surfaces of the flanges guarantee a perfect guidance and a long life for the action of the knife. White Corian handles. Slim profile pocket clip. Metal storage tin.