The prime rr 38 carbon clincher disc road wheelset features a 38mm deep aero rim profile to deliver benefits across multiple yaw angles the rr 38 benefits from a wider rim profile as the interface with the tyre creates a more linear contour continuing to increase the wheels aerodynamic properties the prime rr 38 carbon clincher disc road wheelset features the rd020 hubset and is handbuilt with dt swiss double butted spokes and dt swiss pro lock nipples the rd020 hubset features a superlight