s561a Home » headsets » internal cable routing » s561a INTERNAL CABLE ROUTING HEADSET S561A ZS52/28.6 I IS52/40 Alloy Cap/Cups Sealed Bearings Tapered Steerer Cable routed outside the upper bearing Top Nut: 1-1/8 Bearing O.D.: 52 Crown Cone: 39.8 Height: 17.2 Weight: 126g Technical Diagram