Mil-s-5059,1/2 hard mil spec single material response overall
Mil-s-5059 mil spec 1st material response overall or mil-s-6721 mil spec 2nd material response overall
Mil-s-5059,comp 302 anneale- mil spec single material response overall
Mil-s-5059,1/4 or 1/2 hard mil spec single material response band