Four 10X Round Loupe Great For Viewing Stamps, Coins, Beads & Gems This is a new set of four 10X round loupes Great for viewing stamps, coins, beads and gems May help reduce eye strain The swing away cases protects the lenses The viewing lenses each measure approximately 16 mm (5/8") in diameter Each has a 1" (25.5 mm) focal distance Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.