Steel sleeve anchor with one expansion zone. Substrate: - uncracked concrete of class B15 or higher. Advantages - properties: - most sizes available in a version with two expansion zones, - a wide range of available diameters and lengths, - knurling on the expansion cone facilitates wedging the anchor in the hole, - flat notch on the anchor pin enables manual pre-anchoring, - the anchor is particularly useful when anchoring very thick elements. Material: - electrolytically galvanized steel, anti-corrosion layer thickness min. 5µm.