Snow Tire Chain for Model S (Set for 2 Wheels)Features: Excellent traction, easy to install, excellent skid resistance, low temperature resistant Material and Function: Quenched alloy steel material,rubber,non slip steel particles designed to reduce anti skid chain wear, more abrasion resistance for long service life, stronger grip effect and increase the safety factor, throughout the design, more solid. Hollow drainage design Application: snowfield, slope, mud, etc; Provides excellent traction