When I used the word original, i meant shaft that came with the cue in original condition. Since 13mm is preatty much the standard, anything smaller is no longer in original condition(unless you collect snooker cues). It may still be an original shaft but not in original condition thus devalueing the cue. Even if you bought a cue new with pencil shafts, those original shaft arent worth what you paid for them. After they are turned down past a certain point they are preatty much worthless.