The Black Pier Base is specially designed for mounting outdoor post-top lights. This post-top light accessory product is compatible with wood, masonry, and metal and is built to withstand years of repeated use. This product has a standard 3-inch diameter fitter. Mount this with a post-top light to perfectly illuminate walkways, driveways, porches, yards, patios, or any outdoor locations. Constructed of high-quality cast aluminum for strength and durability, this pier base will help you entertain at night or add security and safety for years to come. Designed and manufactured by a trusted source for quality lighting, hardware, plumbing, kitchen, and bath products for every taste and budget.