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 Material of Surface – very

Material of Surface – very important

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

the minimum complete shrinkage temperature is 110 ℃

multi-angle viewing

Ironworker Pliers have Aggressive Knurl and Tempered Handles

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 Material of Surface – very6pc 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