raw material:40CR,35CRMO Grade:10.9,12.9 Finish color: grey,blak raw material:40CR,35CRMOGrade:10.9,12.9Finish color: grey,blackhead mark:(six line,12.9)(six line,LI,12.9)(six line,12.9) (six line 10.9)(six line 8.8)process:as you need we can apply for galvanized,bluing,phosphating and so on.Machine:Cold forging machine,Heating forging machineavailable in specific & standards(up to your request)