Name Titanium disc Target Grade Gr1, Gr2, Gr3, Gr5, Gr7, GR9, GR11,Gr12 ... disc TargetGradeGr1, Gr2, Gr3, Gr5, Gr7, GR9, GR11,Gr12 StandardASTM B381,ASTM F67,ASTM F136, ASTM F1295AMS4928ASTM B348diameterDIA 90mmx30mm(Various of titanium ... , PayPal, L/C,MarksMake mark on the surface of the titanium ring according to your requirementPropertycorrosion resistance, light weight, excellent hardnessBest ...