Haoge LH-M37W Metal Clip-on Lens Hood for Leica A36 Reference Models: Leica Leitz Elmar 3.5cm 35mm f3.5 A36, Elmar 50mm f3.5 A36, Summaron 3.5cm 35mm f3.5 A36 lenses, and other lenses with a 36mm outer diameter. Inner diameter: 36mm Additional Information: Confirmed to fit securely on a Voigtlander Heliar 40mm f2.8 Aspherical with a Marumi UV filter 34mm attached. Never used except for initial inspection after purchase. Shipped via Takkyubin Compact. Thank you for viewing.