Zipp 60 Rear Clincher - 10/11 Speed SRAM Cassette - 2015 Aluminum hub shell, stainless steel spokes, Carbon rim with aluminum brake surface and tire bed Includes Zipp Tangente butyl road inner tube with removable core (700c x 19-23mm), Zipp integrated Aluminum hub shell, stainless steel spokes, Carbon rim with aluminum brake surface and tire bed