Foot Mounting Crhbn-12/16X1 Corrosion Resistant, For Cylinders Crdg, Crdsnu. Size=12/16, Assembly Position=Any, Corrosion Resistance Classification Crc=4 – Very High Corrosion Stress, Product Weight=43 G, Materials Note=(* Free Of Copper And Ptfe, * Conforms To Rohs)