Steel; o/a dim., 6.000 in. H, 6.000 in. W, 3.875 in. Thk; one thd hole in the end 1.062-12 un, 2b, rh, other end of item is open 4.500 in. Lg by 2.750 in. W by 4.250 in. Deep; one cross drilled hole through middle of the item 1.750 in. Dia; furnished with two prebent wire clips; two sq headed bolts with nuts