Purchased the set on Amazon a while back.  Broke an exhaust stud, drilled it a bit then used the extractor with a 1/2 socket and 3/8 ratchet.  Nothing heavy duty.  Extractor broke and now I have a bigger problem trying not only get the broken stud out but the extractor piece as well. Evidently Chinesieum junk.
		
		
	
	
		
	
		
	
	
		
			
		
		
	
				
			
				














