K Series three piece alloy steel rod end. Includes PTFE race lining. Female mounting with 5/16" bore and 5/16-24 right hand threads. 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.