30-Pack 3cm Steel Caltrops Spikes – Anti-Intrusion Tire Spreader Spikes , Road Security UseFeatures:Heavy-Duty Steel Construction:Made of hardened steel, these 3cm caltrops are rust-resistant, strong, and built to withstand pressure and impact.Always-Upright Design:Engineered with four-point symmetry—no matter how they land, one point always faces upward for maximum effectiveness.Compact & Easy to Deploy:Lightweight and easy to scatter quickly across any surface—perfect for deployment in emergency scenarios.Reliable Anti-Intrusion Solution:Designed to puncture tires and slow down unauthorized vehicles, offering a strong deterrent against theft or trespassing.30-Piece Set:Comes in a convenient 30-pack for wide area coverage or multiple uses—suitable for driveways, warehouses, and rural properties.The product includes: 30 * square nails