Bitflex bit 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. Bit with 1/4' hexagon drive, single bits for TX with bore (tamper resistant), without FLEX zone T15 length 25 mm.