Icons are predefined SVG paths. You can use any SVG path string with Wheelizate Tabs, the pack comes with 266 icons. The length of SVG path is important in animated wheel for fully browser support, because some browser can be laggy with large icons.
Place the following line in head section of your html:
tabTitles: [iconraphael.package, iconraphael.play, iconraphael.smile]
Small icons are suitable for all types of tab.
Large icons are suggested for Side, Classic and Center tabs, where the wheel is not animated.