Need a small, durable light to show if a machine is on, in standby, or has an error? These FILN metal indicator lights are built for the job. They're solid, 8mm (5/16\) diameter lights with a sleek black anodized finish that looks professional. They're rated IP67 waterproof, so a little dust or splash won't hurt them. They run on 12V and come in different LED colors (this pack is Blue). The cool part is you can choose the style: Flat Head sits almost flush with your panel for a minimalist look, Concave Head focuses the light for better visibility, and High Head is for surfaces that aren't flat. This listing is for 3 pieces. They're perfect for DIY projects, automotive dashboards, marine panels, industrial equipment, or custom gaming PCs. Installing them gives your project a clean, finished look that's way better than a generic plastic light. If you need a specific style or color not listed, the seller even does custom orders. Make your project light up the right way.