Extremely tough alloys and advanced design make these impact bits last. The bits are packed in a rugged case with easy-access bit storage. This insert bit set comes with two magnetic bit holders for fast bit changes without dropping or wobbling. The precision design gives you the best fit in fasteners for less stripping. The shock absorbent zone absorbs more torque, making these the preferred bits for use with Bauer™ and industry leading drill/drivers and impact drivers.