You can fit a square sign into a round hole. For our round sign posts, try our Nob Hill brackets, crossing street brackets, or round post brackets. Top off with an acorn pipe post cap.
• Use green Nob Hill brackets with Nob Hill street signs. Cast iron brackets have a copper rod with screws. These are our strongest brackets, field-proven for over 60 years.
• The Civic sign round bracket fits on the tubular pole, for Civic and Keepsake street signs.
• Circular brackets attach parking or traffic signs to round poles.
Pair of Brackets & Hardware : Round Post Brackets Part #:K-TUBE-MOUNT 0" x 0" Aluminum Hardware Verified PurchaseBrackets for round post
They worked as promised.