"ALUMINUM,COMPOSITION 7075,TEMPER T651 QQ-A-250/12,2.58 IN. LG,0.75 IN. W,0.25 IN. THK,ONE 0.344 IN. DIA HOLE TOP CENTER SPACED 0.375 IN. BY 0.313 IN.,TWO 0.156 IN. DIA PIN HOLES SPACED 0.48 IN. APART BOTTOM END 0.375 IN. BY 0.313 IN.,0.19 IN. BY 45 DEGREE CORNER CHAMFER"