1) Material: aluminum based alloy or copper based alloy 2) Good resistance to corrosion 3) Nickel plating before three-unit plating to protect three-unit plating frombeing dissolved or distortion, which makes bearing more endurable and wearable 4) The three-unit plating can't be erased 5) Plating, size and other performance reach OE standards 6) General brands of vehicle that our products are suitable for: Audi, Bedford, BMW,Bulck, Citren, Cummins, Komatsu, Daewoo, DAF, Fiat, Hino, Honda, Hyundai, Deutz,Isuzu, KIA, Leyland, Man, Mazda, Mercedes, Benz, Iveco, Mitsubishi, Nissan, Opel,Peugeot, Renault, Suzuki, Toyota, Volvo, PerkinsOuter packing: Cartons