Self-undercutting mechanical anchor for concrete element

Safety self-undercutting mechanical anchor, galvanized steel grade 8.8, according to UNE-EN ISO 898-1, M10x100/20, to be placed before the piece to be fixed, 10 mm diameter and 150 mm length, inserted in a 20 mm diameter and 100 mm deep hole, made by drilling with percussion hammer and drill bit, on cracked or uncracked element, of concrete with 20 N/mm² minimum characteristic strength and 50 N/mm² maximum characteristic strength.