The Wera 30 Piece Bit-Check 30 Impaktor 2 Screwdriver Bit Set delivers an above average service life, even under extreme circumstances thanks to the best possible utilisation of the material properties and the optimised geometry. The Bit-Checks can be positioned upright at the workplace so the tool is always quickly to hand. For use with impact screwdrivers. Improve productivity when screwdriving with power tools. Maximum utilisation of the material properties, a very special geometry - designed particularly to meet the extreme demands - as well a specific manufacturing process mean that Wera Impaktor tools have an above-average service life. Maximum utilisation of the material properties, a very special geometry - designed particularly to meet the extreme demands - as well a specific manufacturing process mean that Wera Impaktor tools have an above-average service life. Another product advantage is the coating of the Impaktor bits with minute diamond particles. These diamond particles reduce the cam-out effects - particularly high in power tool applications - which can lead to a slipping out of the screw head. The diamond particles literally bite themselves into the screw recess. This means that less contact pressure is required, something that greatly delays fatigue setting in power tool screwdriving jobs. Torsion zone specially designed to absorb such forces and thereby protect the bit tip. The Impaktor stainless steel holder with a retaining ring and magnet satisfies the extreme, dynamic requirements in that there are consciously no small mechanical component parts fitted as they would be more susceptible to failure. It focuses on the basic bit holding function and the cushioning of the extreme impulse peaks with its two different torsion zones. Mainly used in industrial screw assembly applications e.g. with screwdriving robots. The combination of the double torsion zones in the Impaktor holder and the torsion zone in the Impaktor bit results in the socalled TriTorsion system.