Threaded Post Diameter 1.07 mm x 9.5 mm a basic threaded post that is 9.5 mm in length and 1.07 mm in diameter. It is available in 14kt yellow (fits ear nut #11-27-9/18), 14kt white (fits ear nut # 12-27-9/18) and 14kt pink (fits ear nut #14-27-9/18).