The DeWALT FlexTorq screwdriver bit range is impact rated and designed for use with high torque impact drivers. An extended FlexTorq torsion zone protects the bits from the huge amount of torque generated and transfers all of that power to the head to make sure screws are driven as efficiently as possible without the risk of snapping bits. Stored on a convenient keyring with integrated karabiner. Features Includes 10 50mm Pozi bits Integrated karabiner for easy storage Flex torque zone absorbs excess torque and allows bit to flex rather than break Extended FlexTorq torsion zones protect your bits Full fit heads eliminate wobble and screw head rounding.