Display of 21 Extreme PZ2 x 25mm Tic Tac Boxes with 21 Magnetic Holders The DEWALT Extreme Impact Torsion Pozi Bits have a 15° torsion zone that allows the screwdriver bit to flex rather than break and the full fit head prevents rounding of the screw head preventing cam out (bit head slipping out of the screw head due to the turning force). The magnetic screw lock enables tasks to be completed quicker and easier, reducing instances of dropped or lost screws. Supplied with a magnetic bit holder and a modular case.