The Makita D47145 is a genuine 71-piece ImpactX driver bit set, engineered for professional contractors and suitable for use with impact drivers. This comprehensive set includes a variety of Phillips, Pozidriv, Torx, Square, Slotted, and Hex bits, along with essential accessories such as nutsetters, a magnetic bit holder, and a 1/4-inch hex quick change connector. Each bit is crafted from S2 modified steel and heat-treated for extended life and superior durability. The precision machined tips are designed to prevent cam-out and stripping, ensuring reliable performance in demanding applications.