6pc Optical Lens Set, 2" - 200mm, 300mm, 500mm Focal Lengths - 3 Double Convex & 3 Double Concave, 2" (50mm) Diameter Lenses - Optically True Glass - Ground, Beveled Edges - Eisco Labs bee Package Including: 5 expansion bolts

Package Including: 5 expansion bolts with eye ring anchor

Material of Surface – very important

954-0357 Lawn Mowers

Ergonomically designed fluted body with radial gripping ridge - provides an ideal surface for gripping and pulling

6pc Optical Lens Set, 2" - 200mm, 300mm, 500mm Focal Lengths - 3 Double Convex & 3 Double Concave, 2" (50mm) Diameter Lenses - Optically True Glass - Ground, Beveled Edges - Eisco Labs bee Package Including: 5 expansion bolts6pc Optical Lens Set, 2" 200mm, 300mm, 500mm Focal Lengths 3 Double Convex & 3 Double Concave, 2" (50mm) Diameter Lenses Optically True Glass Ground, Beveled Edges Eisco Labs Product Features SPHERICAL Each lens is spherical in shape and measures 2" (50mm) in diameter FOCAL LENGTH VARIETY Converging and diverging focal lengths in 200mm, 300mm and 500mm OPTICALLY WORKED GLASS Made of high quality, optically worked glass. Highly polished with ground