"POTASSIUM CHROMATE PURIFIED CRYSTALS REQ FOR WATER DETECTION,O/A DIM 3.880 IN. MAX LG INCL COCK AND CYLINDER,1.260 IN. MAX DIA,W/ SHRINK FIT SECURED CAP,W/INTEGRAL SCREEN,100 MESH PSI,0.0253 IN. MIN,0.0263 IN. MAX DIA WIRE,THD MTD 1 IN.-14 SIZE,UNS CLASS 3A THD,0.406 IN. LG,RH THD,SQ WRENCHING 0.750 IN. W ACROSS FLATS,DRILLED FOR LOCK WIRE,SELF-LOCKING POPPET DRAIN COCK,BODY STYLE 7 DRILLED FOR LOCK WIRE"