30 x 21mm Jewelry Loupe glass Magnifying Glass 1.Size: 30*21mm 2.material:metal ... mm, 20x21 mm Jewelers Eye Magnifier glass loupe glass30x 21 mm Jewelers Eye Loupe Magnifier/Magnifying glassFolds into itself Comes in protective ... plastic case Durable This loupe is great for rock collectors, coin collectors, hobbyists, jewelers, and ...