The Small Diameter Spline Duplex Open End Lug Nuts by Gorilla offer secure fitment and durable construction for 9/16-18 thread applications. With an open-end, acorn-style seat and 60-degree angle, these lug nuts deliver a reliable and precise fit. Each lug nut features a spline drive head for enhanced torque and theft protection, while the high-quality chrome-plated steel provides lasting durability and a polished finish. This set of 32 includes a locking key for easy installation and security.