Is a type of concrete anchor that consists of a threaded Stud with a wedge-shaped expansion element at its base with a small wedge sleeve. The wedge anchor is inserted into a pre-drilled hole in the concrete, and then a nut is used to tighten the exposed stud. This causes the wedge to expand within the hole, creating a secure bond with the concrete. Wedge anchors are often used in applications where a strong and reliable anchor is needed for securing objects to concrete structures. They are available in various sizes and materials.