We offer Titan© Banner Brackets, the preferred choice of professionals year after year for ease of installation and dependability in the most severe weather conditions. Certified to 80MPH windload. Unique dovetail design requires only on zinc plated bolt and jam nut (included) for sure-lock fastening every time. Each upper and lower bracket is fully adjustable. Titan brackets are cast aluminum construction with extra heavy duty walls assuring years of rugged dependability.