★ This Safety Pile Is Made of Q235 Steel, Which Has High Hardness, High Strength and Durability. Welded and Integrated Structure Enables the Bollard to Withstand Impact. Height: 27.6 Inches ★ Powder Coating Finish Can Protect Parking Piles from Oxidation, Ultraviolet Rays and Discoloration or Rust. Black and Yellow Tops Increase Visibility. Pipe Diameter: 3 Inches ★ Steel Pipe Safety Column Adopts Sealed Bottom Design, Which Increases the Grounding Area. Base: 6.5X 4.5 Inches More Stable and Durable. No Need to Worry About Sand or Cement Seeping out of the Bottom. ★ the yellow Bollard with 4 Anchor Bolts Is Easy to Install in the Bottom Plate with 4 Pre-drilled Mounting Holes. Assembly Can save You Energy and Time. ★ This Guarded Steel Column Stands in the Vertical Direction to Improve the View and Protect the Entrance, Parking Lot, Sidewalk, Bicycle Lane, Etc. Commonly Used in Traffic Sensitive Areas. ★ The posts can be locked either up or down, lightweight, with warning striped for extra secutiry at night.