The Klein Tools 6.25-Inch Accu-Bend Aluminum Billet Level Is Designed For Effective Leveling On and Off The Construction Site. The Patented Magnet Track 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 Thumb Screw Allows For Quick Attachment to The Ends Of Conduit and Pipe While Bending. The V-Groove Fits Snugly Into Pillars, Posts, Conduit, Pipe, and Any Other Round Su