This set includes 18 different driving bits for driving fasteners, screws and bolts. Multiple drill bit types are also included for drilling into metal, timber and plastic. The impact drivers all have a precision-milled tip designed to reduce the instance of rounded screws and cam-outs. Both flatwood spade bits have a spurred wing design that enables faster and cleaner cuts into timber. All HSS bits have a black oxide coating that reduces friction and heat build-up to maximise bit life. They come in sizes 1.5mm-5mm. The four brad point bits have a 3-point design for producing clean and precise holes in timber and are available in 3mm-6mm sizes.