This heavy duty shield anchor is designed to save time and money when fixing security grilles. Simplicity saves time and money. Apart from grilles and bars it has a wide range of uses such as; playground equipment, security lighting, CCTV mountings, road signs, street furniture and shutter doors. This innovative time saver was primarily designed for fixing security grilles. This system saves the installer from welding bolt heads or rounding them off for security. All you have to do is fix the fastener and drill out the standard 8.8 grade socket aperture using a HSS drill bit to leave a circle.