Bitflex bits, the damping zone (only for bits with a length of 25 mm) between the drive and the working tip absorbs excess force peaks that previously led to high wear and destructive ejection forces. The FLEX zone gives the Bitflex a significantly longer service life compared to conventional standard bits. All bits with 1/4' hexagon drive, STANDARD according to DIN 3128, single bits for Phillips PH 3 cross-head screws, length 25 mm