... glass or Pyrex used as automobile,len, plano lens, lamp shade,Sight lens, Front lens, Molded lens, aspheric lens ... quality and well controlled tolerance4. Inside quality: clear and transparent, no mold marks, no inside bubble and dirts5. Function: Guide ... Sight lens, Front lens, Refractor, Molded lens, Spot lens, Lamp cover, Lamp shade, Lighting shade, Lighting cover, glass cover, glass shade ...