To perform high-quality roof installation e.g. with onduline or metal tile roof, it is required to use screwdriver bits with a magnet holder for a hex head of conventional or self-tapping screws used for fastening sheet materials. The bit is composed of magnetic alloy, so you can perform work with one hand even in difficult conditions. The bit is universal thanks to the special shape of its shank, which can be fixed both in conventional cam and collet cartridges. If it is necessary, the bit can be used in a drill. The bit head is made of solid steel, so that the product has a long service life.