"DUCTILE IRON; 5.000 IN. O/A LG; 2.000 IN. FROM CENTER OF BORE TO END OF BLOCK; TWO MTG HOLES 0.516 IN. DIA; 3.500 IN. C TO C OF MTG HOLES; 2.000 OD OF HUB; 1.750 IN. THRU BORE; 1.252 IN. MIN,1.255 IN. MAX BORE DIA; 0.375 IN. H OF FLANGE; 0.875 IN. FROM END OF HUB TO CENTER OF HOLE IN HUB"