A tekscrew adaptor is a tool accessory, also known as a magnetic nut setter or nut driver bit, that allows a standard power drill or driver to install hexagonal-head tekscrews or hex head bolts. Its primary purpose is to hold the tekscrew securely with its strong magnetic tip, enabling fast and precise installation in materials like metal sheeting, wood, and roofing, often without the need for a pilot hole due to the screw's self-drilling tip.