Undercover Ninja Silver Edge Death Defense Spike Nail.The steel used to make this blade is a high strength stainless steel. It is both durable and accurate. Balance is necessary for a good defense spike. This particular throwing knife is crafted from one solid piece of hard steel and individually perfected until it achieves an accurate balance. The handle is made with a solid grip and each pommel has been weighted and smith ed accurately. Each of these Kill Defense Spikes comes with it's own sheath and full ankle/arm strap. It allows the holder to keep the throwing knife secured to the ankle or arm with the sheath. The strap use a high-strength velcro and thick elastic to secure it in position. Slap on some of these and have your entire gear loaded for defense. Specifications: ïOverall Length: 7 Inches ï Blade Length: 3.5 Inches ï Blade: Defense Spike, Stainless Steel ï Includes: Black Nylon Sheath, Full Ankle & Arm Strap