105 WH-RS710 C32 TubelessShimano has brought full carbon wheels to a new level. With a development concept shared with DURA ACE and ULTEGRA, the new full carbon wheels offer balanced performance at a lower price. The C32, with its focus on acceleration and climbing, shares DNA with the C36 DURA ACE and ULTEGRA wheel options. Wheel Size 700c Rim Material CFRP Freehub Body Material Steel, Axle Fixing Method 12mm E Thru Number Of Spokes 24 Speeds 11 12 Rim Width 21 Disc Mount