The Wera 10 Piece Impaktor Torx Screwdriver Bit and Holder Set is a professional-grade impact bit set designed for use with impact drivers, offering superior durability and cam-out resistance across a range of Torx fastener sizes. At the heart of this set is Wera's Impaktor technology, which gives the bits an above-average service life even under the extreme impulse loads generated by impact drivers. The diamond-particle coating on each bit tip increases friction at the point of contact, biting into the screw head to prevent slipping and reducing the risk of fastener damage during high-torque applications. The included 897/4 IMP R Impaktor holder features a retaining ring and ring magnet, which holds longer and heavier screws securely in place — particularly useful for overhead work. The magnet can be pushed back and neutralised when not required. All nine bits and the holder are stored in Wera's compact Bit-Check case, which stands upright for easy access on the workbench and is slim enough to carry in a shirt pocket. The set covers the most commonly used Torx sizes for construction, joinery, and general contracting work, with multiple bits provided in the TX 20 and TX 25 sizes for high-volume fastening tasks. Features and Benefits: • Impaktor technology engineered for use with impact drivers, extending bit service life under extreme conditions • Diamond-particle coating on bit tips prevents cam-out and slipping in the screw head • Impaktor holder with double-torsion spring absorbs extreme impulse peaks • Ring magnet securely retains long and heavy screws, ideal for overhead work • Magnet can be pushed back and neutralised when not needed • Compact Bit-Check case stands upright and fits in a shirt pocket for easy transport Contents: 1x Bit-Check 10 TX Impaktor 1 (10 piece case) 1x 897/4 IMP R Impaktor holder with retaining ring and ring magnet, 1/4" x 75mm 9x 867/1 IMP DC Impaktor TORX® bits: 3x TX 20x25, 3x TX 25x25, 2x TX 30x25, 1x TX 40x25