Mario Mwrote a review of Shimano Ultegra CS-6700 Cassette on June 24, 2016
Familiarity: I've put it through the wringer
Easy to install, great quality and lighter from my old 105 set. put them on my race wheels and they work great. I went to the 11x28 to give me 1 higher gear and 1 lower gear and that's helped my riding a lot.