It's the equipment that police set on the road intercept the suspect vehicle and control the traffic.equipped with 165pcs of aluminum triangular needles at a striking distance and can not cross the cordon blocking the road can quickly and effectively in emergency situation.1. Material: Aluminum 2. Needle: Aluminum triangular needles, length 4.5cm, the number was about 160. 3. Size: 8cm 4. Net Weight: 14.26kg 5. Function: intercept the suspect vehicle and control the traffic 6. Usage:traffic control 7. Features: portable and Anti-impact 8. using temperature: -40℃-55℃