Description FLEXTORQ bits are engineered for durability. This latest generation from DEWALT redefines fitment and performance with overhauled tip geometries. The redesigned tip geometries for use with T20 (T40 is a trademark of Acument Intellectual Properties, LLC, used without permission to indicate compatibility) size fasteners deliver 2X superior fit, on average, versus. previous generation of DEWALT FlexTorq screwdriving T40 bits. Every FLEXTORQ bit features a FLEXTORQ Zone designed to absorb impact for longer life, on average, versus standard DEWALT screwdriving T40 bits. Save time and find the right bit with new highly-visible laser-etched size. Each FLEXTORQ bit is IMPACT READY with a ¼-In hex shank for use in impact drivers and drills.FLEXTORQ ZONE FOR LONGER LIFE: Engineered with a FLEXTORQ Zone designed to absorb impact, resist wear, and deliver longer life in tough applications2X SUPERIOR FIT: Redesigned tip geometries for use with T40 size fasteners provide superior fitment for ease of use and one-handed drivingQUICK BIT IDENTIFICATION: Save time and find the right bit with laser-etched, highly-visible size IDsIMPACT READY: 1/4-In hex shank for use in drills and impact drivers