Car enthusiasts, these spline lug nuts are exactly what you need to secure your aftermarket wheels with style and security! They're M12x1.25 thread pitch, which fits perfectly on Infiniti G35/G37, Nissan 350Z/370Z/Maxima/Altima/Sentra, and Subaru Outback/Forester models. The bulge acorn design with 60-degree conical seat ensures a secure fit on most tuner wheels. What's really cool is the black electrophoretic coating - it's not just paint, it's a proprietary finish that resists rust and corrosion way better than standard coatings. Made from high-quality steel using cold forging technology, these lugs are seriously strong and crack-resistant while still being lightweight. You get 20 pieces in the set, which covers all four wheels plus spares. The spline design acts as a basic anti-theft feature since you need the special socket key (included) to install or remove them. Installation is straightforward with hand tools - though we definitely recommend against using power impact wrenches to avoid damaging the finish. The closed-end design looks cleaner and protects the wheel studs from weather and corrosion. If you're upgrading your wheels or just want more secure and better-looking lug nuts, this set delivers both style and function at a great price point.