"RAW CASTING 356-T6 ALUMINUM ALLOYPER QQ-A-601,ANODIZE PER MIL-A-8625 TYPE 2 CLASS 1; CONSISTS OF 1 DOWEL PIN,2 INSERTS,2 PINS 1 BEARING LINER; 4.113 IN OVERALL DEPTH,14 MOUNTING FLANGE HOLES 0.265 IN. MIN TO 0.275 IN. MAX THRU; PART OF GEAR BOX ASSEMBLY"