The shimano rs010 700c 9 11 speed rear road wheel is part of the road sport series which uses the race proven dura ace wheels technology but at economical prices making them suitable for everyday riding or use at local races the rim has 24 holes and a presta valve hole and features a wear indicator to help detect when your rim becomes worn out the spokes are black stainless steel and laced 2 cross onto 91011 speed compatible hubs with wide flanges angular contact bearings and steel axles