PRO Headset for internal cable routing

Headset for routing cables inside the bike frame.
Suitable for Di2 and standard cables.
Bearing size: 1 1/2" - IS52.
Suitable for 1 1/8" fork neck.
Features durable stainless steel bearings for longer life.
Provides aesthetic and aerodynamic internal cable routing.
Developed for use with PRO Vibe handlebars and stems.
Compatible with all electronic shift cables and hydraulic brake hoses.
Fits stems: Vibe Evo, Vibe Aero, Vibe Superlight, Discover Aero.
Height adjustment is possible using Vibe Evo Spacers.