The Wera 30 Piece Impaktor Diamond Impact Bit-Check Screwdriver Bit Set from ITS is a comprehensive 30 piece screwdriver bit set for use with impact drivers. With the increasing significance of impact drivers within the market, Wera developed the Impaktor range with its special geometry to improve productivity and achieve an above average service life when screwdriving with power tools such as 18v impact screwdrivers. Wera Impaktor bits have a particularly high strength to reduce the danger of premature bit breakage. A torsion zone is specially designed to absorb forces and so protect the tip. The tip also features a coating of minute diamond particles which increases frictional resistance to reduce the danger of slipping out of the screw head. The Wera Impaktor bit holder included in this set effectively cushions extreme impulse peaks associated with impact screwdriving thanks to the double torsion zones found within the bit holder. When combined with the torsion zone found on Impaktor bits this creates the TriTorsion system for the best results and longest working lifetime. The Impaktor holder has a retaining ring and ring magnet which can easily hold longer or heavier screws, making it suitable for above-head work. If the magnet is not required for a certain situation, such as when working with metal, it can be retracted and so disabled.