Gear-like SVG (scalable vector graphics). If you don't have any software for manipulating SVG you can download http://inkscape.org/en/ - for free! the advantage is you can scale them (with no blurring) to whatever size you wish. You can also change their color, shape or remove/add teeth via the ungroup option (Inkscape).
Gear-like SVG (scalable vector graphics). If you don't have any software for manipulating SVG you can download http://inkscape.org/en/ - for free! the advantage is you can scale them (with no blurring) to whatever size you wish. You can also change their color, shape or remove/add teeth via the ungroup option (Inkscape).