... 308 All season Windshield Metal Frame Universal Wiper Blade Material ConstructionMain frame: 1.2mm thickness galvanized ZINC, the frame made by galvanized ... after 500,000 cyclesRemain function after 1,500,000 cyclesSplint and Rivet: both of them use stainless steelAdapter: F2, F3D ... wiper arm, linkage, wiper motor, washer tank, washer nozzle and washer pump for cars, truck, bus, ship, train, tractor ...