GNT-4LED Large Gooseneck Magnifier with large 4" lens & cast iron table clamp base and 2x with 4x Bifocal lens with led illumination, makes it an ideal work and hands free magnifier this design is ideal for reading, inspection, sewing, soldering, threading, polishing. The 18" gooseneck feature allows for unlimited angle adjustment for the ideal working angle. Table Clamp base makes it one of the easiest Flexible Stand Gooseneck hands free magnifiers to use and mount.