Home » headsets » internal cable routing » c522a-8 INTERNAL CABLE ROUTING HEADSET C522A-8 IS52/28.6 I IS60/40 Alloy, Sealed Bearings 1-1/8" to 1.5" Tapered Head Tube & Steerer Top Nut: 1-1/8″ Bearing O.D.: 51.8/60 Crown Cone: 39.8 Height: 11.5 Technical Diagram