This Aluminum Pyramid Top Post Cap is designed to fit over the top of a 2in. x 8ft. square signpost (SH30). Post caps are necessary to prevent injury from sharp steel edges, while also giving your signpost a clean and finished look. Caps will be finished with a black paint that is made to stand up to harsh weather conditions. For complete installation, simply slip this unit over the top of a 2in. square signpost and secure using a bolt or adhesive. Sold individually.