RemixIconEx.System.settings_2

You're seeing just the function settings_2, go back to RemixIconEx.System module for more information.
Link to this function

settings_2(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.settings_2()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M8.686 4l2.607-2.607a1 1 0 0 1 1.414 0L15.314 4H19a1 1 0 0 1 1 1v3.686l2.607 2.607a1 1 0 0 1 0 1.414L20 15.314V19a1 1 0 0 1-1 1h-3.686l-2.607 2.607a1 1 0 0 1-1.414 0L8.686 20H5a1 1 0 0 1-1-1v-3.686l-2.607-2.607a1 1 0 0 1 0-1.414L4 8.686V5a1 1 0 0 1 1-1h3.686zM6 6v3.515L3.515 12 6 14.485V18h3.515L12 20.485 14.485 18H18v-3.515L20.485 12 18 9.515V6h-3.515L12 3.515 9.515 6H6zm6 10a4 4 0 1 1 0-8 4 4 0 0 1 0 8zm0-2a2 2 0 1 0 0-4 2 2 0 0 0 0 4z" />
</svg>

example usage

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