Self-Aligning Rod Coupler Fk-M6 Compensates For Angular And Radial Misalignment, For Fitting On Piston Rod Side. Size=M6, Corrosion Resistance Classification Crc=2 – Moderate Corrosion Stress, Ambient Temperature=-40 – 150 °C, Product Weight=23 G, Materials Note=(* Free Of Copper And Ptfe, * Conforms To Rohs)