Mechanical anchors in galvanized steel with metal clamp and expansion cone. Extra-long thread ideal for all type of carpentry, plant and building applications. - Features: - Thread diameter equal to drilling diameter - Reinforced head to avoid damaging the thread during installation - Special shape expansion bush to make the expansion soft and progressive - It guarantees high load values and rapid installation even without moving the object to be fixed Support materials Recommended for non-cracked concrete with strength class C20/25