The Optimus Round Series Black Polycarbonate Protective Cover is a must-have for anyone looking to protect their lights from rock and debris impacts. Made of shatterproof polycarbonate, this black out cover fits most Optimus Round Series lights and is available in other housing colors. Its secure dual snap-on function transforms the Optimus into 20 lights in 1, allowing you to change the beam pattern in a snap. This protective cover is practical, durable, and essential for anyone who wants to keep their lights safe and secure.