The Klein Tools 935RBLT 9 in. Lighted Torpedo Billet Level, Rare-Earth Magnet is designed for effective leveling on and off the construction site. The Magnet Track on the Klein Tools 935RBLT keeps the powerful Rare-Earth magnets secure and ensures that they won't fall out. This leveler also includes large, easy-to-read vials and vial windows for easy viewing at any angle. The vials on the 935RBLT are also brightly illuminated by the LED lights to ensure easy reading in all light conditions. The V-groove fits snugly into pillars, posts, conduit, pipe, and any other round surface. The tapered nose slides into pockets and corners. This tool can make leveling tasks easier for users who are carpenters, electricians, plumbers, drywall installers, DIY enthusiasts, or professional tradespeople.