The model number of our Secret Agent boot knife could be none other than 4007. This updated version of the boot knife features a double-edged blade with a non-reflective black-oxide finish. The blade is heat treated to Kershaw’s demanding specifications to bring out the very best qualities in the steel. The black-oxide coating provides additional blade protection. For a secure grip, the handle is glass-filled nylon with a textured rubber overmold. The Secret Agent has a dual-carry molded sheath with straps for leg carry as well as a belt clip for convenient belt carry. For additional versatility, the knife comes with a lanyard hole.