4 Pack Square Bifocal Reading Glasses BR2104 feed-color-Black/Gunmetal/Purple Lens width about 21/16 inches

Lens width about 21/16 inches (52mm)

Lens Width: 2 1/8 inches (54mm)

Hypoallergenic Option: The absence of metal screw not only eliminates the risk of screw loosening or coming out but also minimize the potential for allergic reactions or skin irritation

Bridge(DBL) about 13/16 inches (20mm)

Frame width about 5 7/16 inches (138mm)

4 Pack Square Bifocal Reading Glasses BR2104 feed-color-Black/Gunmetal/Purple Lens width about 21/16 inchesAcrylic lens, plastic frame with spring hinges Frame width about 5 3 8 inches (136mm) Lens width about 1 7 8 inches (48mm) Lens height about 1 9 16 inches (39mm) Bridge(DBL) about 3 8 inches (10mm) Temple length about 5 1 2 inches (140mm) EYEKEEPER BIFOCAL GLASSES A crescent shape on the bottom part of the lenses have magnification, which is for reading and close up work. And the other parts of the lenses have no magnification,which is for distance