WE MAKE THIS THREADED BUNG SET FOR YOU GUYS THAT WANT ADJUSTABLE 2X2 4 LINK BARS. THE THREAD SIZE ON THE STUD AND IN THE BUNG IS A WHOPPING 1-1/8? IN SIZE. THEY ARE EXTREMELY HEAVY DUTY. IN THIS KIT YOU GET TWO ADJUSTABLE 4 LINK END BUSHINGS WITH JAM NUTS, AND THE TWO SQUARE THREADED BUNGS.