1)Material: 45# 40Cr,35CrMo 2)Finish: Zinc Plated, Phosphated, Black, Oxide 3)color:gold,sliver,black 4)Grade:8.8 10.9 12.9 WHEEL BOLT MERCEDES BENZS ACTROSS/FRONT Art no: CJ-BO571.Material:45# 40Cr 35 Crm2.Grade:8.8 10.9 12.93.Finish:Zinc plated,Phohated, Black,Oxide4.Color:Gold,Sliver,Black5.Used: Mercedes benzs Actross/Front