The Klein Tools 7-Piece Magnetic Nut Driver Set features nut drivers with internal flanges to provide a solid, twist-resistant shaft anchor. The nut drivers 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. Warnings: Always wear approved eye protection.; NOT insulated. Will NOT protect against electrical shock. - Features: Full hollow shafts (except 3/16-Inch [5 mm]) facilitate work on long bolt applications; Rare Earth magnetic tips; Cushion-Grip handles for greater torque and comfort; Color coded handles domes for easy identification; Internal flanges provide solid, twist-resistant shaft anchor; Chrome plated shafts help prevent corrosion; Set contains Cat. No. 646-3/16M, 646-1/4M, 646-5/16M, 646-11/32M, 646-3/8M, 646-7/16M, 646-1/2M; Rare Earth Magnet Tips; Nut drivers' full hollow shafts (except 3/16-Inch [5 mm]) facilitate work on long bolt applications; Rare Earth magnetic tips on nut drivers hold fasteners in place; Cushion-Grip handles for greater torque and comfort with color coded handle domes for easy identification; Made in USA; Rare-Earth magnetic tips on nut drivers hold fasteners in place; Cushion-Grip™ handles for greater torque and comfort with color coded handle domes for easy identification