This is a 10 speed hub with a converted cassette to work flawlessly with 11 Speed Drivetrains. This is a Clincher, rim brake you can learn more about the cassette at this link and buy future ones as well. https://www.lascoconcept.com/en/11s-cassette/ can also drop off enroute to VT from NY in western/central CT, Central/western Mass, Albany, NY, Etc. or NYC area will ship via UPS ground at cost to the CUS48

based on the zipp history file, this is a 2010-2012 Disc, I bought it in 2013 used, i have used it in 7 full IMs since then and 3 OLYs, + short setup rides before each race.
https://www.sram.com/en/service/articles/disc-timeline