Windshield wiper blade for 95%car types Spcc steel corrosion-resistant galvanized steel frame, 100% final inspection for the best quality. Natural rubber with powder liquid graphiteall natural rubber produce, and the raw material degree is the same like oem parts and some world know manufactory like bosch and valeo. Sus430 rivetall stainless steel rivet made by sus430. All season for usemore than 500, 000 times used test, and through rigorous acid and salt spray test, can be applied to all kind of environment and climate. Color box