The Challenger Folder: Large has a black-oxide coating and is crafted from Japanese Aus-8 steel with a Hardness Rockwell C 58-60, safeguarding durability and consistency in the field. Challenger Mark II Knives are also equipped with a textured linen micarta grip ensuring precision control, topped with an oversized hilt or groove protecting the wielder from injury in any condition. All knives come complete with a heavy-duty Kydex sheath for safe storage and transport in or out of the field.