Aluminum magnesium bronze, tensile strength 110000 lbs min, 0.500 in. Thk, 12.000 in. Lg, 3.000 in. W, tap hole 0.500-13 nc each end, 1.500 in. From end to bolt hole center, 1.500 in. From side to bolt hole center, 9.000 in. From bolt hole center to bolt hole center