22.85" x 18.5" 30 lb. Rubber Base with 60" Black Post, Wheels

Reinforced plastic square post is stronger and more stable than round postsPost has reinforcing internal cross bars for 15% greater wind resistance. More surface area contact with post to prevent sign twisting, post won't rotate in base. Lightweight and will never rust Pre-drilled holes for multiple sign sizes, zinc plated hardware included.