Double Concave Lens, 300mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs hidden 99% Carbon 60 Solvent Free

99% Carbon 60 Solvent Free 80mg - Food Grade - Carbon 60 Olive Oil - From The Leading Global Producer

you can cut the appropriate size according to your needs to make your crafts more suitable to wear

and most general DC applications etc

5mmMaterial: SiliconeColor: ClearShape: Square/RectangleMount Type: Push-in

Blue Robot) Astropic 3D Eye Patch for Kids Glasses (Left Eye

Double Concave Lens, 300mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs hidden 99% Carbon 60 Solvent FreeDouble Concave Lens, 300mm Focal Length, 3" (75mm) Diameter Spherical, Optically Worked Glass Lens Ground Edges, Polished Great for Physics Classrooms Eisco Labs Product Features DOUBLE CONCAVE Highly polished, double concave lens SPHERICAL Lens measures 3" (75mm) in diameter 300MM FOCAL LENGTH Diverging lens with a 300mm focal length OPTICALLY WORKED GLASS Made of high quality, optically worked glass. Highly polished with ground edges GREAT FOR