https://www.cyclingweekly.com/news/product-news/campagnolo-chorus-h11-disc-brake-groupset-379633
Campagnolo launches an updated 12-speed Chorus groupset | Cycling Weekly
Apr 25, 2019 - Campagnolo has brought 12 gears and a Super Record makeover to its Chorus groupset
12 speedchorus groupsetcampagnololaunchesupdated
https://www.cyclingnews.com/reviews/campagnolo-chorus-11-speed-groupset/
Campagnolo Chorus 11-speed groupset | Cyclingnews
Jan 23, 2009 - Another year, another gear
campagnolo chorus 11 speedgroupsetcyclingnews