trafficbollard(steelbollard,parkingbollard,guidingcolumn,post,securityproduct,delineatorpost,reflectiveequipment)Model:CDS-BOLFunction:1.Installedinallkindsofparkingplaces.2.Up-Downbollard.Whenitis"down"position,itisasflatasground,thecarscangoinandout;whenitis"up",itbecomeabollard,veryflexible.3.Manualoperationwithaspecialkey.Noneedpowersupply.4.Itisacompleteandindividualequipment.easyinstallationandeasyoperation.5.Waterproof.Specification.1,Height(whenitis"up",aboveground)***ailable:400mm,600mm.2.Thicknessofthewallofthecolumn***ailable:2mm,5mm.3.Diameterofthecolumn:219mm4.Material***ailable:A3steelandstainlesssteel.)