Damascus 8.75" Blue Diamond Plate Butterfly Knife Balisong Bayo. The blade is made from a Damascus billet containing 1095/15N20 alloy steel. It is hammered and heated with the process repeating to get this exquisite Random pattern. The Rockwell rating is around 54 to 55 with 176 true blade layers. Featuring a drop point style I just can’t say enough about this knife. The handle has a black steel frame that comes with a metallic blue diamond plate pattern. The smooth textured mounts feel great in your hand. To lock the handles in place the bite handle comes with a safety lock at its end. The ABS sheath can slide sideways down as a clip or you can use the slots to put a belt through. Overall Length: 8.82 Inches.