This is Pop-Tech 2 double Biconvex Lens Set, optically perfect replacement parts for Google Cardboard VR glasses

Made of larger clear round biconvex lenses with top quality, give you a better optic 3D experience as microscope.
Asymmetrical magnifying biconvex lenses magnification with lens parameters roughly large 34mm Diameter and 45mm focus focal distance length for making headset devices and google cardboard v2.
These lenses have no tabs and had it sandwiched between cardboard layers. Great for homemade Google Cardboard VR.
One side of the lens is curved and the other side is a little flatter. Fit perfectly and work for VR goggle and virtual glasses.
High definition small 2 pair of optical pop-tech 34mm lenses biconvex lens kit.