Fits 4x4 (3 5/8 inch) Fence Posts: This black plastic fence post cap measures 3 5/8 inches by 3 5/8 inches internally with a 1/2 inch edge height and is designed to fit most standard 4x4 fence posts securely. Durable and stylish. High-Quality Materials: Constructed from durable plastic, these fence post caps are UV resistant, heat resistant, impact resistant, and waterproof, ensuring long-term performance in various weather conditions without fading or cracking. Protects Wooden Fence Posts: These caps help shield wooden fence posts from damage caused by sunlight, moisture, ice, and other environmental elements, helping to prevent cracking and extend the lifespan of the posts. Easy Installation: Each 4x4 black post cap comes with two screws. Simply drill holes into the wood and secure the cap in place by screwing through the pre-drilled holes on both sides of the cap. Installation is quick and straightforward. Decorative Design: Ideal for enhancing the appearance of fences, mailboxes, decks, lamp posts, docks, and piling posts. The sleek, classic design adds a refined and finished look to outdoor structures. Color: Black Material: Plastic Package Contents: 16 x Fence Post Caps