Ritchey Pro Zero Integrated Headsets. Compatible with frames designed for Campagnolo Hiddenset. Black alloy bearing cover, alloy crown race Stainless steel angular contact bearing packed w Ritchey grease Campagnolocompatible head tube integrated style, fits 42mm ID head tubes 4545 degree angular contact bearings fit directly into head tube Designed for 46mm OD head tube Steerer Tube 118 Threadless Headset Type Integrated, 42.0mm OD bearing 4545 Hiddenset
)
