Ritchey Comp 1-1/8″ Threaded Headset – EC34/28.6, EC34/30, Black
Ritchey Comp Threaded Headset. Product Specifics Color: Black Crown Race: 30 Defined Color: Black S.H.I.S Lower: EC34 S.H.I.S Upper: EC34 S.H.I.S. Stem Clamp Diameter: 28.6-26tpi Quill .