Fits 4x4 (3 5/8) Fence Posts: AMAATE black plastic fence pole cap measures 3 5/8 inches by 3 5/8 inches inside with a 1/2 inch edge height and fits most fence posts perfectly. Durable and attractive. High-Quality Materials: Made of plastic, our fence post caps are UV resistant, heat resistant, impact resistant, and waterproof, and can withstand extreme weather changes without fading or cracking. Protects Wooden Fence Posts: Fence post caps help protect your wooden fence from potential damage caused by sunlight, ice, water, and other elements, extending the life of fence posts and reducing cracking and weathering. Easy Installation: Each 4x4 black post cap comes with two screws. Simply drill holes in the wood and secure the cap by screwing through the holes on both sides of the cap into the wood post. Installation is quick and straightforward. Stylish Ornamental Design: 4x4 post caps enhance the appearance of your fence, mailbox, deck, lamp post, dock, and piling posts. With a sleek and classic design, these caps add a refined touch to your home's exterior. Color: Black Material: Plastic Package Contents: 16 x Fence Post Caps