Stable steel construction Our post base is crafted from high-quality steel with a black finish, built to withstand a range of weather conditions while providing reliable support for chain-link fence posts, lamp posts, mailbox posts, and other cylindrical bases. Designed for durability and longevity, this sturdy base keeps your installations secure year-round. Adjustable and stable design The solid round base features smooth welds for enhanced stability. Side mounting screws allow you to easily adjust the post position and securely fasten it in place, preventing wobble and ensuring perfect alignment for your fence, flagpole, or other applications. Easy installation Installing this ground flange base is straightforward—pre-drill a 12 mm hole, position the base on the surface, mark the hole locations, and secure with the included expansion screws. Then slide your post into the base and tighten the mounting screws on both sides for a firm, secure fit. Versatile applications This multi-use post base is suitable for a variety of outdoor projects, including chain-link fences, lantern posts, mailbox posts, flagpoles, and other cylindrical steel constructions. Its versatility makes it an essential addition to your garden, yard, or outdoor space.