RemixIconEx.System.settings_4

You're seeing just the function settings_4, go back to RemixIconEx.System module for more information.
Link to this function

settings_4(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.settings_4()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M2 12c0-.865.11-1.703.316-2.504A3 3 0 0 0 4.99 4.867a9.99 9.99 0 0 1 4.335-2.505 3 3 0 0 0 5.348 0 9.99 9.99 0 0 1 4.335 2.505 3 3 0 0 0 2.675 4.63c.206.8.316 1.638.316 2.503 0 .865-.11 1.703-.316 2.504a3 3 0 0 0-2.675 4.629 9.99 9.99 0 0 1-4.335 2.505 3 3 0 0 0-5.348 0 9.99 9.99 0 0 1-4.335-2.505 3 3 0 0 0-2.675-4.63C2.11 13.704 2 12.866 2 12zm4.804 3c.63 1.091.81 2.346.564 3.524.408.29.842.541 1.297.75A4.993 4.993 0 0 1 12 18c1.26 0 2.438.471 3.335 1.274.455-.209.889-.46 1.297-.75A4.993 4.993 0 0 1 17.196 15a4.993 4.993 0 0 1 2.77-2.25 8.126 8.126 0 0 0 0-1.5A4.993 4.993 0 0 1 17.195 9a4.993 4.993 0 0 1-.564-3.524 7.989 7.989 0 0 0-1.297-.75A4.993 4.993 0 0 1 12 6a4.993 4.993 0 0 1-3.335-1.274 7.99 7.99 0 0 0-1.297.75A4.993 4.993 0 0 1 6.804 9a4.993 4.993 0 0 1-2.77 2.25 8.126 8.126 0 0 0 0 1.5A4.993 4.993 0 0 1 6.805 15zM12 15a3 3 0 1 1 0-6 3 3 0 0 1 0 6zm0-2a1 1 0 1 0 0-2 1 1 0 0 0 0 2z" />
</svg>

example usage

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