The Rubicon Alu Rail End Stop is a component used in solar panel mounting systems to secure the end of an aluminum rail. It comes with a spring nut and cap screw, making installation quick and easy. This component is designed to work with Rubicon's range of aluminum rails, and has been engineered to provide a strong and secure connection between the rail and the mounting structure. The end stop features a 10mm hole to accommodate hanger bolts and is made from high-quality materials to ensure long-lasting performance.