MJPetersen
Veteran Member
You want something sturdy enough so that if you hook the top of a boulder while spreading your gravel that you do not "reshape" the blade.  It is inevitable that you will snag an immovable object at some time.  Your blade needs to be strong enough to stop the tractor or max out the traction in such situations without self sacrificing. 
 
Like everything there is a balance. For your occasional light use a light duty BB may work for years. Until... 
 
Mike
	
		
			
		
		
	
				
			Like everything there is a balance. For your occasional light use a light duty BB may work for years. Until...
Mike
 
 
		 
  
			