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. hoses.
Fits stems: Vibe Evo, Vibe Aero, Vibe Superlight, Discover Aero.
Height adjustment is possible using Vibe Evo Spacers.