The DEWALT 25 Piece Extreme Flextorq PZ2 25mm Screw Bits are ideal for cordless impact drivers and drills, accepts standard 1/4in hex shank accessories. The Extreme Flextorq screwdriver bits are designed to withstand the high forces of todays impact drivers. This significantly reduces the instances of failure when fixing large screws in place. Torsion bits have a Flexible Torsion Zone that absorbs torque peaks and reduces breakage. The compact magnetic drive guide ensures the smooth fastening of screws with an extendable sleeve for improved fastener stability and control.