ESSVE concrete screws are designed for quick and easy fixing in concrete, brick, hollow material and hollow brick. Specially hardened screws that are screwed directly into the drilled hole without a dowel. The length of the screws is t. s. "hi-low" thread for easy assembly. The screws are made of hardened steel, bright galvanized or with CorrSeal coating. If the mounting depth is increased, the load-bearing capacity improves. Concrete screws have been tested and approved for use in pulsating loads.