Especially at high-risk areas the use of the unival® bollards allows to create larger protection zones around strategical areas in case of emergency, which is especially important for blast protection, as bigger distance means better protection. Impact resistant: 15.000 Joules, our unival® concealed bollard continues to operate and the safety is guaranteed. Break- in resistant: 630.000 Joules, partial or total breakage of the unival® concealed bollard, but the vehicle will be stopped within 1 meter of the collision point.  Technical Specifications Drive: Hydraulic Cylinder stroke: 700 mm Cylinder diameter: 275 mm Cylinder thickness: 10 mm Rise/descent time: about 7 sec Absorption: 220 W