Mil-s-5059,1/4 or 1/2 hard mil spec single material response band
Mil-s-5059 annealed mil spec single material response overall
Mil-s-5059 mil spec 1st material response or mil-s-5059 mil spec 2nd material response or mil-s-5059 mil spec 3rd material response or mil-s-5059 mil spec 4th material response or mil-s-6721 mil spec 5th material response or mil-s-6721 mil spec all material responses or mil-s-6721 mil spec 6th material response