"MATERIAL IS STEEL,MIL-S-8699,CLASS 1,COND C; SURFACE TREAT IS CADMIUM PLATE,TYPE 2,CLASS 2 PER MIL-STD-870; 6.250 INCHES LARGEST OUTSIDE DIAMETER; 4.875 INCHES SMALLEST OUTSIDE DIAMETER; 1.940 INCHES HIGH; 6 HOLES WITH 0.212 IN. MIN,0.218 IN. MAX DIAMETER"