Wera impaktor diamond hard bits for torx screws wera 05057667001 wera impaktor tx 40 x 50mm bit designed for use with torx socket screws impaktor technology ensures an above average service life even under extreme conditions thanks to 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 wera 05057667001 impaktor diamond hard bi