Mounted wheels cylinder are mainly used for internal grinding  for which straight wheels  are not suited. Mounted wheels truncated cone are mainly used for  grinding  various grooves and dressing angle, etc. Mounted  wheels cone are mainly used for  grinding  the work-piece with  larger radius  round angle  and  irregular  shape. Mou- nted  wheels  conical  end  60  tip  are  used  for  grinding cone surface and tip hole. Mounted  wheels  conical  end-round  tip are used  for  grinding   internal  particular surface and mould wall.  Mounted wheels hemisphere are mainly used  for  internal  grinding. Mounted  wheels  sphere  are  mainly  used  for grinding  the workpiece of smaller radius round angle.