FOOT MOUNTING HBN-12/16X2-A FOR CYLINDERS ESNU, DSNU, ESN, DSN, EGZ AND SENSORS. SIZE=12/16, CORROSION RESISTANCE CLASSIFICATION CRC=1 - LOW CORROSION STRESS, PRODUCT WEIGHT=122 G, MATERIALS NOTE=(* FREE OF COPPER AND PTFE, * CONFORMS TO ROHS), MATERIAL MOUNTING=(* STEEL, * GALVANISED)