These sturdy aluminum sign brackets are ideal for displaying one or dual-sided signs. Mounts to posts, buildings, and more for traffic control, warning and advisories, safety, advertising, etc. Extruded aluminum is durable and reliable for long-term outdoor use. Flared leg fits 4" OD posts. Blade Holder Length: 9". Mounted with strapping, signs Must be punched for mounting. Looking for more? 95TSS is your one-stop provider of the best-quality safety, construction, and traffic signs, as well as posts, stands, hardware, and much more.