Hi-Grip Pound Thru Flat Head Screwdrivers, Flared Tip with a hexagon blade suitable for hammer striking. Features and Benefits • Chrome vanadium steel blades for durability • Striking heads, suitable for striking with a hammer to free up seized screws • Magnetic tips for easy screw alignment • Moulded grip for user comfort Notes • To safely drive these screws, the tip of the screwdriver should be of the same width as the slot in the screw head and fill it as well, to minimise slipping and deforming the screw head