Boker ORCA Dive Knife. 10 1/4" overall. 5 3/8" black titanium coated partially serrated X15 T.N. stainless blade which is rust and corrosion proof. Top of blade has sharpened section which is ideal for chopping. Black injection molded Hytrel handle. Polyoxymethelene sheath can be attached in several tactical positions. Made according to recommendations of the German Special Forces.