Heavy Duty Concrete Parking Block with Pre-set holes for easy installation. Provides protection to structure from vehicles, etc. For commercial and residential use. Includes a layer of weather resistant sealant. This product comes in many different color variants, as well. Specifications – 6′ parking bumpers are 6′ long, 9″ wide, and 5″ high – Weight: Approximately 275 lbs. – 4,000 PSI Rated Concrete – Pre-set holes for installation