Rolf prima vigor disc clincher front road wheelthe vigor disc front wheel combines best in class aerodynamics with a disc brake compatible hub and an all black disc specific rim for a wheel that outperforms the competition in every way featuresrim material alloy clincherfreehub material cnc machined titaniumwheel size 700cspoke count 20spoke type bladed cx speedrim depth 31mmbrake track width external 22mmbrake track width internal 17mmhub xst w centerlockbearings enduro high c