RPM rod ends are made specifically to accommodate Lunsford’s Super Duty Turnbuckles & Ball Studs and Associated’s Oversized Ball Studs. They are molded gray and are sold in sets of twelve rod ends per package. Please note; These Rod Ends will NOT work with any other Ball Studs or Turnbuckles other than Lunsford Super Duty Turnbuckles & Ball Studs or Associated’s Oversized Ball Studs & Turnbuckles.