So, meet United Cutlery’s new M48 Tsunami Force Cyclone Boot Knife! The 5 3/4” cast stainless steel blade has been crafted into a tri-edged triumph, using temperatures up to 1,030 degrees, which gives it a 48HC. The three, blue and black, spiraling cutting edges come down to an incredibly sharp piercing point. As with all M48 knives, the glass-fiber-reinforced nylon handle gives you a strong and secure grip. The boot knife also features a solid stainless steel hand guard and skull crusher pommel. The blade slides into a custom Vortec belt sheath that fits like a glove and is virtually indestructible.