Newyi 39 Mm Metal Vented Lens Hood For Leica M 39 Mm (Silver) Produced by YSK This 39 mm metal vented lens hood is compatible with all Leica 39 mm filter thread lenses. It is easy to screw onto the lens or filter. The solid metal construction makes it last for a long time. Designed for all Leica 39 mm filter thread lenses Easy to install Solid metal construction with a flat black interior to prevent reflections Can also be used with telephoto lenses to protect the filter mount from dings and scratches