Home » headsets » Tapered Headsets » d40f-7 TAPERED HEADSETS D40F-7 IS42/28.6 I IS60/45.8 Alloy, Sealed Bearings 1-1/8” to 1.8 Tapered Head Tube & Steerer Top Nut: 1-1/8″ Bearing O.D.: 41.8/60 Crown Cone: 45.8 Height: 16.4 Technical Diagram