"CONSISTING OF MATERIAL STEEL CASTING CLASS 90-60,1900 IN. DIA 2.875 IN. THICKNESS,STEEL CENTER SHAFT DIA 4.750 IN.,12 EA HOLES 1.150 IN. DIA 2 HOLES 0.450 IN. DIA WITH 0.500-13UN C 1B THD -0.75 MIN FULL THD.,12 HOLE S 0.406 IN. DIA WITH 0.375 24UNF-2B THD"