Klein Tools 3/8 in magnetic color-coded power nut setter was designed with the professional in mind. Made of high-grade impact steel and is color-coded for easy identification. The nut setter contains rare-earth magnets to securely hold fasteners, and is also extra long for reach into recessed areas. Klein® 38PNDC Magnetic Color-Coded Power Nut Setter, 3/8 in, Blue, Steel Alloy