This Set of Safety Posts and Warning Chain Offer High Visibility and Quick Setup. Name:Parking sMaterial:galvanized steel pipeStanding Height:650mm/25.5in,800mm/31.5inColumn diameter:76mm/3inBase thickness:5mmBarrier Chain Length:5m/16.4 foot iron chainPacking List:2×Security Posts for Driveways,2×Base,2×Lock,2×Key,8×Screw,1×Chain,2×HooksScope of application:parking spaces,school entrances,driveways,commercial street isolation,highway intersections,parking lots,etc.Feature:Thickened material,waterproof,anti-corrosion and anti-rust,anti-kick and anti-collision,no deformation,strong and durable.Note:1.Due to the heavy weight of parking s,some workers may leave it on the ground during the handling process.If parking s has slight scratches or dents,please understand.2.All products are manual measurement,there will be slight error,please refer to the actual product