slightly less than the diameter d6 of the core a circular cavity 62 is similarly included with a chamfer 66 on both upper and lower flange ends cavity 22 for receiving the mounting end of the mounting bracket 24 see fig1 is oriented a height h11 above the end of flange 58 the elongated rectangular cavity 22 extends upwards a height h6 and has a width w4 and depth equal to d6 w5 the pair of screw holes 28 are drilled perpendicular to longitudinal axis 62 at a width w3 from the edge of cavity 22 with the first hole h7 above the bottom and the second hole h8 above the first hole again the embodied invention is intended to include any such measurements as can be used to practice this invention by those skilled in the art the embodiment shown for this part uses the measurements consisting of d3 1 605 inches d4 1 25 inches d5 1 752 inches d6 1 90 inches h6 2 003 inches h7 0 250 inches h8 1 265 inches h9 43 8 inches h10 1 2 inches h11 0 125 inches h12 1 060 inches w3 0 501 inches w4 1 002 inches w5 1 19 inches w6 1 32 inches and a2 45 degrees such measurements include tolerances of 5 degrees for angles 1 16 for fractions 0 005 for.