THE THREADS ARE 3/4" RIGHT HAND ONE END AND 3/4" LEFT HAND ON THE OTHER END. MACHINED FROM 1" od MATERIAL AND MADE INTO A 7/8" HEX FROM END TO END. THESE CAN BE USED FOR TIE ROD TUBES WITH EITHER TIE RODS OR ROD ENDS INSTALLED IN THE ENDS, 4 BAR LINKS ON DIRT CARS, ETC ETC.