Home » headsets » Tapered Headsets » cs3-4 TAPERED HEADSETS CS3-4 ZS44/28.6 | EC44/40 Steel Ball Retainers 1-1/8″ to 1.5″ Tapered Steerer Top Nut: 1-1/8″ Cup O.D.: 44 Crown Cone: 39.8 Height: 16 Technical Diagram