Specifications include, but are not limited to: The spike system described is a 2025 Defender Stinger Spike System, Item Number 90225, but the City is open to an equivalent make and model. Each proposed spike system must meet the minimum requirements below: 1. Device shall extend to 25 feet and have an attached rope of not less than 62 feet. 2. Device shall contain 180 detachable, hollow spikes with tip guard. 3. Spikes are 1.8” long, heat treated to T7, with a non-reflective buffed surface and anti-coring point. 4. Device measures 24 ¼” x 21” x 3 ½” when contained in the carrying case. 5. Weight of unit out of the case is 14.5 lbs. 6. Shipping weight of the unit is 23 lbs. 7. Hardware is 100% stainless steel. 8. Reusable modular base with molded sections of Dupont Zytel Flexible Nylon connected with stainless steel hardware and replaceable spikes. 9. System assembly includes one package of 10 each replacement spikes, tip guards, grommets, and one spike replacement tool. 10. Device is bi-directional and has a rocking arm action that tilts the spike into the tire at the correct angle allowing maximum penetration. 11. Device is reusable. 12. Device is pre-assembled. 13. Device is officer serviceable in the field. 14. Includes Lifetime Spike Replacement Guarantee