About this items: 【Heavy-Duty Steel Construction】: Built to endure, this parking bollard post is crafted from 4.5-inch diameter Q235 steel with a robust 0.12-inch thickness. The galvanized core and powder-coated exterior create a rust-proof fortress. Ideal for high-traffic zones needing long-term durability. 【Stable Ground Grip】: The sealed, weighted base creates a vacuum-like grip on asphalt or concrete, preventing wobbling or displacement. Reinforced with anti-tamper screws, the driveway control bollards poles resists theft and stays put even after repeated collisions. 【Versatile Protection for Any Space】: Guard streets, walkways, loading docks, or retail entrances with this all-purpose defender. While ideal for concrete/asphalt, avoid grassy areas—this parking barrier thrives where stability matters most. Not just for cars—also blocks bicycles, carts, and vehicles. 【DIY Installation】: Install in minutes with our no-fuss 3-step parking bollards: Drill holes, insert the provided stainless steel bolts, and tighten with the included wrench. No extra costs for hardware—everything’s in the box. Perfect for quick deployments in parking lots, schools, or warehouses.