State Designed DS22 Security Bollards are an excellent perimeter security choice anywhere where K12 anti-ram protection in required. The DS22 state designed security bollards comply with the toughest U.S. Department of State (DOS) crash-test ratings. Fixed DS22 bollards provide around-the-clock protection against vehicular threats and are engineered to meet up to K12 (M50 equivalent) performance criteria (15,000 lb vehicle at 50 mph). The DS22 removable bollards are designed for areas where frequent and fast manual removal of the bollard may be necessary. To remove, simply unlock these bollards using the internal locking mechanism and then lift using the hidden lifting lug.