Metal lens shade for standard 40. 5mm filter thread lenses, will screw into your Lens, or filter. Solid metal construction, with flat Black interior to prevent Reflections. Ensures no problems with igniting or motor functions. The 40. 5mm screw-in lens hood fits lens with 40. 5mm filter diameter only. Please verify your Lens thread size/ filter diameter before ordering. Lens thread size will be Marked somewhere on the Lens barrel or printed underneath your Lens cap. This number is always preceded by a "Ø" (Diameter) symbol. For example: ø40. 5 = 40. 5mm lens thread size