Material, cr flat wire, half hard, no. 18 stubs (0.050) x 1/2 in.; 1.938 in. O/a lg, 0.500 in. O/a w; w/three 0.379 in. Diameter holes and tow 0.169 in. Diameter holes spaced 0.688 in. Apart and ea betwen two of the larger holes which are themselves equally spaced 0.688 in. C to c