For more than a decade Z-Chain has been the winter traction product choice for police, fire, ambulance and other professional fleets throughout North America. Z-Chain’s fast installation, aggressive traction performance and extreme durability simply out-class all other options. Manganese Alloy Cross Members Provide Superior, All-Around Traction Performance And Greater Durability Compared To Conventional Traction Products Fast, Secure Installation And Removal, With No Need To Move The Vehicle Better Compatibility With Anti-Lock Brakes, Traction Control, All-Wheel Drive (Awd) And Other Electronically Monitored Control Systems Meets S.A.E. Class “S” Clearance Requirements Or Vehicles With Limited Clearance