ESSVE concrete screws are designed for quick and easy fixing in concrete, brick, hollow material and hollow brick. Specially hardened screw that is screwed directly into the drilled hole, without a dowel. The screw is fully threaded with so-called. "hi-low" - a thread that facilitates assembly. The screw is made of hardened steel, with a galvanized surface or CorrSeal coating. The load capacity is improved by increasing the fastening depth. For reinforcement in materials other than concrete, a test load must be applied, in accordance with the assessments recognized by the Construction Board, in order to obtain a suitable practical load. Concrete screws have been tested and approved for use in pulsating loads.