They are eleganttheme icon (free), you can see full css class http://demo.warptheme.com/joomla/wt_ocean/templates/wt_ocean_pro/css/et-line-font.css
More detail https://www.elegantthemes.com/blog/freebie-of-the-week/free-line-style-icons
Reply To: i need a list of icons to use in Our services section in ocean theme
