Foot Mounting Crhbn-20/25X2 Corrosion Resistant, For Cylinders Crdg, Crdsnu. Size=20/25, Assembly Position=Any, Corrosion Resistance Classification Crc=4 - Very High Corrosion Stress, Product Weight=236 G, Materials Note= (* Free Of Copper And Ptfe, * Conforms To Rohs) , Festo