6.00 inches long; 4 inches wide; material 6061-t6 alunimum alloy per qq-a250/11 0.130 inch , 0.120 inch thick; finish chromate chemical film per mil-c-5541; front and edges shall be finished black iaw sd1037-01-92, fed-std-595 color number 37038; engrave vertical gothic characters iaw sb1198-51-08; fill engraved characters with sm1624-02 iaw sb1274