Features: High Intensity Prismatic Grade Striped Sheeting On Two Sides. Sturdy, And Durable - Thick, Double Wall Panel Feet Won't Break Off From Panel Stable, Recycled Rubber Feet, Securely Attached To Panel Easy Stacking, No Tangling Of Feet Feet Rotate Flat For Stacking Molded-In Lugs Keep Units From Sliding When Stacked Tamper Resistant Linking Bracket Prevent In-Line Barricades From Being Pulled Apart Linking Bracket Accommodates Various Configurations Units Pivot On Bracket And Adjust To Uneven Ground Holes For Bolting On Signs (One Side) Panels On Both Sides For Retroreflective Sheeting