RadToolBar supports different sizes of buttons. We have created two starter skins (Office 12 and Office 2003) for the 32x32 size. You can, however, create toolbars with any size and write your own skins for them. For more info on creating skins for RadToolBar please refer to the manual where you can find thorough specification of the skin format. It is possible to have multiple toolbars on the same page - each with a different skin.