SmartSign Pair of Sign Brackets and Hardware for Tubular 2-3/8" od Posts Brackets allow you to mount your sign to a 2-3/8" round post. Brackets "hug" the post keeping your sign securely in place - no drilling required. Durable aluminum brackets are lightweight for easy handling. Paired with steel nuts and bolts, the tube mount kit provides excellent weather resistance. Rust-proof hardware will last 15+ years outdoors! Brackets include 8 bolts and 8 nuts, 4 to mount the bracket to the post and 4 to mount up to 2 signs back to back on the opposite sides of your post. Sign mounting bolt should be put into the bracket with the hex nut head facing towards the post and the bolt end facing out. To mount your sign, fasten the top bracket and then center align the bottom bracket. Use your sign as a placeholder to determine the distance between your pre-drilled holes. Tighten up the bolts on the outer ends to secure the bracket in the desired position.