Extrema Ratio EX3909OP Operativo Knife - 12 1/2" overall. 7 1/4" BOHLER
N690 stainless cobalt steel blade with MIL-C-13924 black finish. NATO
MIL-SPEC elastomer Forprene handle. Full tang. Double sheath style. The
outer sheath is a nylon soft sheath with straps. Inside there is a hard
sheath made of a nylon composite with 15% fiberglass. This is where the
blade actually rests. The 39-09 double sheath is designed to be strapped
to the calf in the style of Italian parachutists. Removable hard inner
sheath. Hard side storage case.