Self-Aligning Rod Coupler Fk-3/4-16 Compensates For Angular And Radial Misalignment, For Fitting On Piston Rod Side. Size=3/4, Corrosion Resistance Classification Crc=2 – Moderate Corrosion Stress, Ambient Temperature=-40 – 150 °C, Product Weight=720 G, Materials Note=(* Free Of Copper And Ptfe, * Conforms To Rohs)