RemixIconEx.Others.key

You're seeing just the function key, go back to RemixIconEx.Others module for more information.
Link to this function

key(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Others.key()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M12.917 13A6.002 6.002 0 0 1 1 12a6 6 0 0 1 11.917-1H23v2h-2v4h-2v-4h-2v4h-2v-4h-2.083zM7 16a4 4 0 1 0 0-8 4 4 0 0 0 0 8z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}