Lug Stud Conversion – 12×1.25mmx12x1.25mmx1.75inch. #37101 Sold and Priced Individually. Converts your lug bolt application to a lug stud and lug nut application. Allen head receiver on one end to screw stud into hub. No more struggling to line up the wheel with the lug bolt hole! Allows for more options in which style lug nut you want to use! Allows you to use the Lightweight Aluminum, Swivel Base, Spline Driven, seven sided, open end or closed end, short or extended, red, blue, black, gun metal, chrome, neo chro and more!