Manufactured using high quality components for performance and reliability. Made from heavy-duty die-cast magnesium alloy with a variable speed gearbox for greater accuracy. Fitted with a powerful magnet to ensure unit stays adhered at any angle. Includes safety fixing strap and integrated coolant system to extend the life of cutters and increase the quality of the cut. Can be used with a 16mm twist drill chuck. Designed for use in fabrication, construction and other applications when drilling ferrous metal.