Woodway Solar Fence Post Cap 4 x 4 With Powerful LED Light With Wide Area Coverage Copper Outdoor Cap for Deck or Fence A solar post cap made of the highest quality synthetic ABS (Acrylonitrile butadiene styrene) material for extra durability, featuring an electroplated finish and crystal clear lamp enclosure. Modern architectural design with a flat top that adds a touch of class and elegance to your deck, garden or patio fence. Fits maximum post dimensions 3.5 x 3.5. LED bulb for C7 wide area lighting and greatly improved charging capabilities even on cloudy days make this solar lamp different from cheaper imitations. Internal reflective panel increases light output. Battery included. LED solar light makes a smart alternative to running electrical wires and offers a solution where power may not be available. This copper flat top outdoor cap provides protection to your posts from water and sun damage. It will not peel, fade, or split at the corners and is extremely durable.