Modulock blocks are certified prefabricated concrete modules, with connection anchors, which can be easily fitted together to create temporary or permanent dry works such as dividing walls, retaining walls or noise barriers, etc. which can reach 4 meters in height. Furthermore, Modulock concrete blocks, being modular modules, are quickly removable and can be conveniently repositioned to create new arrangements and combinations. They do not require foundations but only a flat and stable base on which to rest.