SOG Knives & Tools Pentagon FX, 4.77 Fixed Blade Knife, Spear Point Straight Edge, G10 Handle, CPM S35VN Steel, Black Titanium Nitride Finish, Black, Includes Nylon Sheath SOG-17-61-01-57 Representing an evolutionary step in hard-use fixed blade knives" Pentagon FX is a full-sized knife made for the modern-day warfighter. It features a double-edge CYRO S35VN full-tang steel blade" removable G10 handles and a GRN sheath compatible with SOG's next-generation Universal Mounting System. It's fully customizable to meet the demands of various missions" and purposefully designed to exceed expectations.