This is a metal hood specifically for the Minolta MD 20mm f/2.8 lens. It is exclusively for the Minolta MD 20mm. I am unsure if it can be attached to MC or New MD lenses. I've already sold the lens, but I kept this valuable hood. I've decided to offer it to someone who can use it. The threads seem to be in good condition, but this type of screw-on hood may be slightly easier to come off compared to bayonet-type hoods. Please be aware that returns are not accepted to prevent swapping.