Magna-flip Clip on Flip up Magnifiers, 5.00 Power Converts Distance Glasses and Into Reading and Computer Glasses Lens size - 58mm x 35mm x 132mm Overall Width New leg profile to fit both metal and plastic frames All metal alloy construction - virtually unbreakable clip mechanism Legs have proprietary coating to protect ophthalmic lenses and prevent shifting and scratching Convenient one hand application to Prescription frames with positive indexing lens positions