Shimano Ultegra CS-R8100 12 Speed Cassette 11-30T HG+ Hyperglide Road Bike
Model: Ultegra CS-R8100. Cervelo P3 Ultegra Carbon TT / Tri Bike 54cm 2 x 11 Ultegra Rim Brake + Extras (#366074611660). Compatible with Shimano 12-speed HG+ chains. The quality of the bike itself was A+ and in great shape.