KA-BAR #1281 D2 EXTREME, has elite steel for superior cutting and edge retention. Cutting tests prove that D2 is one of the toughest steels used in knife making. Results show that the D2 Extreme Fighting / Utility knife cuts twice the amount of media as a standard carbon steel knife. In the C.A.T.R.A. Cutting Test, the D2 scored 300.6 mm, far exceeding it closest competition of only 168.8 mm. Knife comes with a KA-BAR / Extreme sheath featuring molded blade insert, ballistic nylon / Cordura construction, large utility pouch and multiple tie-down options. The D2 Extreme has grown to be one of our most popular fixed blade knives among our military, sportsmen, and collectors alike. One of a handful of machines like it in the world, the CATRA tester uses controlled pressure, stroke length, number of cycles and a certified sand-impregnated paper to determine the sharpness and edge-holding capabilities of a blade. * CATRA stands for Cutlery and Allied Trades Research Association.