Disk, Rectangle, Flat/Wedged Opthalmic

P Opthalmic Prism, 4.0 Prism Diopter Type Disk, Rectangle, Flat/Wedged Form Polished, 2/S Material Glass. Coating No Mount N0. Dimensions: Od 1.65″ X 1.65″ Can/A Thk .15″ Radius N/A Fl N/A..