FlexTorq? bits are engineered for durability. This latest generation from DeWALT redefines fitment and performance with overhauled tip geometries. DeWALT's newest FlexTorq? PH2 bits deliver 100% more screws per bit. The redesigned tip geometries for use with T20 to T40 size fasteners deliver from 2X up to 5X great fit. Every FlexTorq? bit features a FlexTorq? zone designed to absorb impact for up to 200X longer life.