Benchmade Adamas 375SN Fixed Blade Knife with Molded Sheath (Desert Sand) Bundle Designed by custom knife maker Shane Sibert to honor the courage and commitment exhibited by our fighting heroes. Drop-point blade style with serrations on spine. D2 tool steel (60-62HRC). Injection-molded sheath with secondary locking strap and tension screw. 4.2" blade length, 0.170" blade thickness.