The Autotex Heavy Duty Winter is engineered for extreme weather conditions like rain, sleet, and snow. An all-steel riveted frame with a rubber booth covering gives durability while preventing any freezing or snow/ice build-up. The Autotex Heavy Duty Winter wiper fits both 5mm and 6mm narrow saddle wiper arms. All Autotex wiper blades are designed with our DuraTex all-natural compression molded rubber.