The traditional three-piece carbon steel rod end is defined as QA1’s KM Series rod ends. Available in right and left hand threads and inch dimensions, these truly are precision rod ends. Grease fittings and stud configurations are available. BALL, 52100 Bearing Steel, Heat Treated, Hard Chrome Plated, Precision Ground, , RACE, Alloy Steel, Corrosion and Wear Resistant, , BODY, Carbon Steel (Alloy Steel – Mfr.’s Option), Protective Coated for Corrosion Resistance.