40Cr material 12.9 high tensile strength bolts good finish For various types of trucks, such as Benz Actross, Isuzu, Nissan, Volvo, Hino, Renault, Canter FE111, Nissan CB31, BJ130, BJ1049, BJ1028 and so on.High tensile strength materialGood finish, zinc plating or blackening auto wheel hub bolt