Playing cue shaft diameter. I'm very curious. Ages ago the standard generic diameter was 13mm (.512").  Nowadays I have no clue.  Metric or Imperial system please give me some numbers for what YOU play with.  I'd like to get as many as possible.  FYI:  1 mm = .03937 of an inch.  Or, .010" per 1/4 millimeter.  Thank you very much for your participation.
				
			
			
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