I'm looking at an I3 shaft locally, ( only pics so far ) and i have a question.  My understanding is that the I series has a short 1/4 inch furrel.  This one has what looks like a 1 inch furrel on it. Also, from the pictures I can't tell if the I3 icon is blue or black.  It should be blue but it almost looks black.   Are there older versions of these shafts that were not color coded?
  




				
			


