SOG Pentagon FX 4.77 inch Fixed Blade Knife - Representing an evolutionary step in hard-use fixed blades, 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. Pentagon FX's sheath system isn't the only thing that's adaptable. The handles can also be removed for a slimmer profile. Pentagon FX comes with multiple accessories from SOG's Universal Mounting System. It allows for flexible mission specific set-up, including adjustable sheath retention, secondary retention, mounting angle, mounting method and combinations of each. Features: An American-made steel featuring vanadium and niobium carbides that provide high degrees of toughness and wear resistance. Textured for optimal grip, the G10 handles feature a single-fastener slip-on / slip-off design that allows you to customize your knife to your mission's needs. No-tool sheath adjustment allows you to increase or decrease the retention strength as needed.