This SRAM XX1 XG-1299 Eagle 10-52 12 speed cassette has low miles (about 250ish) on it and is in great shape. Most of the wear is in the large gear ring which is missing a tooth, but doesn't seem to affect the performance - the other teeth almost look untouched. Sorry that it is a little dirty. Retails for $530 - Cross Listed… Whether for prized race machines or the build of their dreams, the XG-1299 cassette is the ultimate, giving riders unprecedented 520 percent range thanks to the new 10-52 tooth-span. Stronger racers are now free to choose larger chainrings for more top-end speed, without sacrificing climbing range. More time is spent higher up in the cassette where athletes power transfer is most efficient and wear is minimized. Featuring the industry’s strongest X-Dome™ architecture and proven XD™ driver body, it’s also backwards compatible to give riders even more Eagle™ upgrade options for their current bikes. With multiple Olympic, World Cup and World Championship titles, it also matches up perfectly to XX1 Eagle AXS™ enabled componentry.