Add a PTFE liner to the traditional three-piece carbon steel female rod end and you have QA1’s KF-T Carbon Steel Series rod ends. Available in right and left hand threads and inch dimensions, these truly are precision rod ends. Stud configurations are available. BALL, 52100 Bearing Steel, Heat Treated, Hard Chrome Plated, Precision Ground, , RACE, Alloy Steel, Corrosion and Wear Resistant, PTFE Lined, , BODY, Carbon Steel (Alloy Steel – Mfr.’s Option), Protective Coated for Corrosion Resistance.