The Expo Magnetic Clip Eraser mounts to any magnetic whiteboard surface making it easy to erase and refresh any whiteboard. This eraser keeps everything at your fingertips on your magnetic whiteboardÑwhether big or small-and the thick felt traps dry erase dustÑmaking it easy to refresh your whiteboard. Expo Magnitic Clip is available with either 2 Fine or 3 Chisel markers to match your need.