This 21mm Black Metal Loupe Has Magnification Of 10x Power. Comes In It's Own Leather Case With Snap-front Closure. The Case Will Protect Loupe From Dust And Scratches. Take It With You Anywhere. A Favorite Among Jewelers.* Sturdy and dense black metal octagonal frame with quality 21mm lens * Loupe has bar at one end which can be used with a snap link to carry with keys wherever you go * Loupe rotates in and out of metal holder to prevent any scratches on lens * 10x magnification power which gives 1000% larger viewing; ideal for jewellers, stamp collectors! * Black leather snap-closure case included for storage and protection of loupe