Buyers recessed 4" LED strobe lights are constructed with a die-cast housing and durable polycarbonate lens. This strobe light contains 24 LED bulbs and features 6 flash patterns. Buyers recessed 4" LED strobe lights include a PL-3 plug.If your work truck needs some high quality and high visibility strobe lights then Buyers recessed 4" LED strobe lights are perfect for your application. These lights are SAE J595 class 2 rated. Don't worry about the elements affecting these lights. These lights are also IP67 rated, meaning they are protected from dust and can be submerged in water up to 1 meter in depth for 30 minutes.