Wera impaktor diamond hard bit for torx screws tx20 wera 05057624001 screwdriver bit designed with impaktor technology to ensure an above average service life even under extreme conditions thanks to a best possible utilisation of the material properties and optimally designed geometry particularly suitable for use with conventional impact drivers the rough diamond coating reduces the danger of any slipping out of the screw head due to the enhanced frictional resistance wera 05057624001 impa