1)diamond segments used for single saw blade from diameter 200mm to 3500mm, multi saw blade, gang saw, calibrating roller and (http://maplered.com) so on. 2)used for Marble (http://www.lightemprador.com) , Granite (http://tanbrown.org) , concrete and (http://maplered.com) limeStone (http://g603.net) etc.