"ALUMINUM ALLOY BODY,QQ-A-200/11,T6511 OR QQ-A-225/9,T651; 3.636 IN. LG; 3.505 IN. W; 1.800 IN. H; TWELVE MTG HOLES 0.126 IN. MIN 0.133 IN. MAX DIA; INCLUDES ONE BEARING,NAS 504-4 REAMED TO 0.9365 IN. MIN 0.9370 IN. MAX ID AND ONE LUBRICATOR NAS 516-1"