6-Pack WHITE Solar Hexagon Post Cap Lights with WHITE LEDS for 5X5 Fence Post- GREEN NATURAL SOLAR Light source : Ultra Bright White SMD LEDs for each individual light. Material: Premium Heat-Resistant Plastic Operating Time: Up to 8 hours (depending on weather, regions and sunlight intensity available) 5x5 Combination Mounting Base for 5x5 model has two sides and thus serves two functions. Inside diameter of one side is 4.75" (good for solid wood/composite posts) and inside diameter of other side is 5 1/16" (good for hollow PVC/Plastic/Vinyl posts)