05.5 in. Lg, 2.0 in. W, 1.25 in. High; 3 jacks along lg on one side 1 jack on opposite side; finish iridite per mil-c-5541, type 1, grade c, class 2; primer one coat per mil-p-23377; paint 2 coats epoxy per mil-p-22808 color per fed-std-595, no. 36231