"STEEL,CHROME-NICKEL-MOLYBDENUM,E4340,CONDITION C,3 CORNERED MTGAREA WITH OPENING,CONE SHAPED INTERNALLY,1.771 IN. MIN,1.775 IN. MAX DIAOF OPENING TOP,1.374 IN. MIN,1.375 IN. MAX DIA OF OPPOSITE END OF CONE,EXTERNAL PART STEPPED,FIRST STEP,TOP,0.160 IN. H,SECOND 0.720 IN. H,THIRD 0.370 IN. H,2.249 IN. MIN,2.250 IN. MAX OD OF STEP 3"