QA1's HM Series rod ends are a traditional three-piece chromoly steel male rod end. These precision rod ends are heat treated, are available in right and left hand threads and in metric and inch dimensions. Grease fittings and stud configurations are available. BALL, 52100 Bearing Steel, Heat Treated, Hard Chrome Plated, Precision Ground, RACE, Chromoly Heat Treated Steel, Corrosion and Wear Resistant, BODY, Chromoly Steel, Heat Treated, Protective Coated for Corrosion Resistance.