WHL RR 26x4 OR8 AT-PRO801 BK 32 OR8 FB1100 8-10sp 6B SEAL BK 190mm DT2.0BK 26x4.0 Wheel Size Rim Model: OR8 AT-Pro801 Hub Model: OR8 FB-1100 Sealed QR Freehub Body (rear wheels only): 8-10s Cass Rotor Mount (disc wheels only): 6B