Material:Glass

Double Concave Lens.

Diameter:40.5mm / 42mm / 43mm / 50mm / 52mm / 56mm (optional)

Focal length:-30mm / -40mm / -50mm / -95mm / -100mm / -123mm (optional)
Note:
1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2. Please allow slight manual measurement deviation for the data.