Concrete anchor screws are a specialized type of fastener designed to be used directly in concrete or masonry. Unlike traditional mechanical anchors, concrete anchor screws are self-Tapping and can be inserted directly into a pre-drilled hole. In many cases, concrete anchor screws can be removed and reinstalled without damaging the concrete. They can be used for a wide range of applications, including securing shelves, cabinets, and brackets. Please note: While concrete anchor screws offer many advantages, it's important to select the appropriate type and size for your specific application.