Klein Tools has developed the 40-Piece ProFlex Impact Driver Bit Set with their patented ProFlex torsional recoil system, which utilizes advanced energy absorbing technology to prolong the longevity of the bit. This set includes high-impact rated S2 steel bits, perfectly suited for heavy-duty applications. With extended length 3.5-inch #2 Phillips and #2 Square bits, you gain easy access to hard-to-reach fasteners. The compact, modular storage system is compatible with MODbox and can be stacked with other cases of similar design. Be prepared for any job with this comprehensive set, featuring a 3-inch bit extension with a strong magnet to keep bits securely in place. The set also includes a variety of Phillips, Slotted, Square, and TORX bits to fit the most common fasteners used in the trade. Additionally, the set comes with 1/4-inch and 5/16-inch magnetic power nut drivers, designed to increase surface contact and improve performance with minimal