RoundIcons.com brings you a juicy set of 1000 hand crafted, flat, round, professional looking vector icons. Can’t go wrong with these easy to customize, designed to convert and a 30 day money back guarantee. Quoting their site:
Made with attention to details and designed to provide you with the ultimate resource for whatever project you would work on. Give a unique and clean feel to your website, prints, infographics or applications using our complete set. Ready to use icons weather you are a regular user or a designer you will find our Collection very friendly and extremely easy to use.