K12 Automatic Rising Bollards | Hydraulic Retractable Bollards - ZASP Automatic Rising Bollard Suprema HB-HA(SA)520 Automatic/Semi-Automatic Bollard ISO 22343-1:2023 Impact test by 7200kg truck travelling at 80kph The upgraded K12 M50 Suprema HB-HA(SA)520 Automatic/Semi-Automatic Bollard features a fully optimized drive system: available in hydraulic-integrated and electric configurations, with the hydraulic split version optionally equipped with EFO for greater flexibility