Bosch 24-Piece Impact Tough Screwdriving Bit Set is a professional-grade set of bits designed for use with impact drivers. The set includes a variety of insert bits, including Phillips, Square, Torx, and Combo bits, as well as 2" Power Bits. The bits are made from high-quality steel for durability and long life. The set also includes a Standard Bit Holder that provides 10x the torque of new impact drivers. The tilt-in/tilt-out case mechanism makes it easy to access the bits, and the customized storage configuration keeps them organized. The precision engineered bit tips ensure a secure fit in screws, and the durable case included protects the bits from damage.