This is Pop-Tech 2 Double Biconvex Lens Set for vr, perfect replacement parts kit for Google Cardboard VR glasses.

Large biconvex lenses with top quality, 34mm focus distance biconvex lens telescope give you a better 3D experience! Great for Homemade Google Cardboard VR.
Asymmetrical biconvex lenses with 34mm Diameter and 45mm focal length.

Features:
High definition bigger biconvex lenses with high quality, optically give you a better 3D experience.
Small double-convex 34mm lenses diameter. Made of plastic with no tabs and clear and work well for making google cardboard headset devices and VR goggle project and virtual glasses. The lens does not come with tabs so just had it sandwiched between cardboard layers.
Focal distance is roughly 45mm focal length and magnifying glass optic lens microscope with magnification feature.
Great to use for DIY Google Cardboard VR Project. One side of the lens is curved and the other side is a little flatter. Fit perfectly for Google Cardboard V2.
Package includes 1 pair of Biconvex Lens.

Lens Parameters:
optic round 34mm diameter
45mm focal length

Package includes:
2 Piece of Pop-Tech 34mm Biconvex Lens