Gorilla Automotive 91148 Acorn Bulge Lug Nuts - 14-Millimeter by 1.50 Thread Size - Box of 100 is designed with a 13/16-inch Hex size and a 60-degree conical seat. The thread size is stamped on every lug nut for easy identification. The special design provides more seating surface than traditional Tuner lug nuts. Protecting the world"s finest wheels for over 35 years!