Oakley eye glasses eyeglasses shop frames jackknife 6.0 polished brown 51-20-138

Product Name: Oakley eye glasses eyeglasses shop frames jackknife 6.0 polished brown 51-20-138
Size: 51-20-138 Model: jackknife 6.0 Color: polished brown Lenses are prescription and the strength is unknown. This frame is preowned. Minor wear to be expected. The eyeglass numbers are usually written as: xx-xx-xxx or they might have small boxes between the numbers on the eyeglass frame. 1. The first number in the shop eyeglass size is the distance across one lens of the eyeglass frame ( does not include the frame) 2.The second number in the eyeglass size is the distance across the bridge on the eyeglass frame. 3.The third number in the eyeglass size is the length of the temple(arm piece) from the front of the eyeglass frame to the end of the temple, which goes behind the ear.