A screw head
Split by <a href="//commons.wikimedia.org/wiki/User:Stannered" title="User:Stannered">User:Stannered</a>
2007-04-21
<a href="https://en.wikipedia.org/wiki/Image:Screw_drive_types2.svg" class="extiw" title="en:Image:Screw drive types2.svg">en:Image:Screw drive types2.svg</a>