... strength: 4.8-12.9 grade Grade 12.9 wheel stud bolt with black plating Features:1.Size:As you requirement2 ... .)Finish:black,zinc plated,dacromet,etc5.)Material:45#,40CR,35CrMo,35#Remark:1.we can maufacture various bolt you need if ... packing,we can meet your requirement. Grade 12.9 wheel stud bolt with black plating