"1.125 INCH THIC; ROUGHLY WHEEL-SHAPED WITH OD OF 6.374 & ID OF 2.600 INCHES AND 2 FEET AT BOTTOM CORNERS AND 2 EARS AT TOP CORNERS; EACH EAR HAS 0.350-0.358 IN. HOLE DRILLED THRU; EACH FOOT HAS 2 HOLES 3/8-16, ONE ON SIDE EDGE, 1.055 IN. FROM BOTTOM EDGE; THE OTHER ON BOTTOM EDGE, 0.927 IN. FROM OUTER EDGE; WHEEL PART HAS 4 HOLES, 1/2-13, UNC-2B, DRILLED AND TAPPED THRU, EQUALLY SPACED ON CIRCULAR LINE 2.050 FROM CENTER OF WHEEL"