Standard 52" FlexBollard™ Patented carbon steel torsion springDesigned to withstand repeated impactsIncludes a powder coated base 52″ FlexBollard™ View Product View Accessories View Installation Guides Standard 72" FlexBollard™ Patented carbon steel torsion springDesigned to withstand repeated impactsIncludes a powder coated base 72″ FlexBollard™ View Product View Accessories View Installation Guides FlexBollard-XL™ Heavy duty base is galvanized for durabilityUtilizes concealed spring technologyLifetime limited warranty on base FlexBollard-XL™ (52″ Or 72″) View Product View Accessories View Installation Guides Looking for a different product? Flexible Bollards Bollard & Sign Post Combinations Parking Lot Safety FlexMailbox™