Klein Tools' Hollow Magnetic Color-Coded Power Nut Drivers are designed with the professional in mind. Each power nut driver is made of high-grade impact steel and is color coded for easy identification. The nut drivers contain Rare-Earth magnets to securely hold fasteners, and are also extra long for reach into recessed areas. Cushion-Grip, ratcheting handle provides outstanding comfort and control. 6 hollow nut drivers for work on threaded rod. Extended length shaft for easy access into recessed areas. Rare-Earth magnets provide strong fastener retention. 5-Inch sturdy shaft for extended reach and access. Magnet size increases with each hex size to hold screws and nuts. Durable finish for corrosion protection.