The Benchmade 375BK Adamas Fixed Blade Knife w/ Black Handle. The Adamas was designed by Shane Sibert. The desert sand finished D2 steel drop point blade has a plain cutting edge and serrations on the spine. The handle is skeletonized with optimally positioned grooves. The Adamas fixed blade knife also comes with a blackcolored injection molded sheath with secondary locking strap and tension screw for secure storage and custom tuned deployment.