Robust screw driving! The special torsion zone absorbs the torque load at the tip of the drill bit. Do you need Phillips screwdriver bits for driving screws? Bits that last long and perform well in demanding applications? Then the PRO PH Impact Bits are the right choice. They are designed for strength and resistance to high torque. The PRO PH Impact Bits are a great option for contractors looking for durable screwdriver bits for tough jobs. The bits are made from heat-treated, modified steel for excellent stability and resistance to high torque. Their torsion zone absorbs the torque load at the tip of the bits to ensure they do not break. They feature color-coded rings that indicate the head type and laser markings to help you select the required size.