Gunman Replacement blade.  This saw is designed to cut hard dry wood and small branches.  The Gunman is brilliant for cutting up building material or dry dead wood as the teeth are very aggressive but small.  The tooth style is a set tooth that will stay sharp for a very long time, as the tips have been hardened, using a high frequency heating process.  But because of this treatment you can not sharpen them.  

There are three blade lengths to choose from.