Screw-in UV filter threaded for 58 mm. This is a budget offering sold under the Hama brand.
<a href="//commons.wikimedia.org/w/index.php?title=User:Trio3D&amp;action=edit&amp;redlink=1" class="new" title="User:Trio3D (page does not exist)">Trio3D</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>