Black Galvanized Metal Post Cap for use on a 4x4 wood fence or deck post. The cap covers the top of the post, protecting it from the rain and snow. Slip it on the end of the post and nail it in place with a 1" galvanized nail through the pre-drilled hole. A 4x4 galvanized post cap will not only protect the post end from the harmful effects of water, such as twisting, cracking and decay, but it will also add a stylish finish to the project. Fits standard 4x4 fence or deck post (actual size 3.5 in. x3.5 in.) Black galvanized steel construction for long-lasting performance Easy to install Protects wood post end from water damage and decay