Self-Aligning Rod Coupler Crfk-M20X1, 5 Size=M20X1, 5, Corrosion Resistance Classification Crc=4 - Very High Corrosion Stress, Ambient Temperature=-20 - 100┬░C, Product Weight=1280 G, Materials Note= (* Free of Copper and Ptfe, * Conforms to Rohs) , Festo