BL-3 are reasonably priced close distance dental loupe style Magnifiers with 3x Magnification. They have a complex dental loupe lens structure that provide a comfortable field of view for close work with a comfortable extended working distance of 11″-16″ inches. Worn like glasses, thus leaving the hands free for working and manipulation for detailed inspection. The BL-3 has pre focus medical loupe style construction, high quality coated multi lens optics at a reasonable price. Includes interpupillary (IPD) and nose bridge adjustments, and has a aluminum lens frame, comes with a padded carrying case and eyeglass lanyard to hold the loupes on when your looking down.