The Klein Tools Magnetic Nut Driver Set features nut drivers with internal flanges to provide a solid, twist-resistant shaft anchor. The nut drivers in this 7-piece set are made with chrome-plated, hollow shafts to help prevent corrosion. The donut-shaped magnetic tips easily hold fasteners in place for convenient use. The drivers are constructed with Cushion-Grip™ handles to provide greater torque and comfortable use.