Illuminate your flag for a dramatic nighttime effect with this Solar-Powered Outdoor LED Flagpole Light from Nature Power. Heavy-duty clamps let you position it on any flagpole up to 4 in. Dia. With an adjustable solar panel four ultra-bright LED bulbs and a rechargeable battery it can shine for up to eight hours on a full charge. Made from sturdy plastic and aluminum this weatherproof light automatically turns on at dusk and off at dawn for hassle-free performance.