Concrete screws or masonry screws as they’re also commonly known as, are specially designed to fix materials to masonry surfaces such as concrete or brick. They feature a full thread from head to tip, which is deeper than a normal screw thread to ensure a high pull out resistance. They remove the need for additional fixings and screw directly into a pilot hole (the pilot hole is determined by the screw size i.e. an M8 would require an 8mm pilot hole)