Shur Grip Z is a patented SCC product that is designed to meet the traction product needs of the everyday consumer and is available to fit most passenger car tire sizes. Shur Grip Z offers a unique combination of performance and convenience features for every user. Shur Grip Z class S cable chains Fast and easy installation with included rubber tighteners Better all-around traction performance than conventional cable or link chain For use on most passenger vehicles Offers a smooth ride. Chains should be fitted to tire before actual use. Fitment can be affected by age of tire, tire manufacturer and/or tread type