For a traditional carbon steel two-piece rod end, QA1 offers its CM Carbon Steel Series rod ends. These metal-to-metal rod ends are protective coated for corrosion resistance and are available in both metric and inch dimensions with left and right hand threads. Grease fittings and stud configurations are available. Ball 52100 Bearing Steel. Heat Treated. Hard Chrome Plated. Precision Ground. Body Carbon Steel. Protective Coated for Corrosion Resistance.