Home » headsets » Tapered Headset – Angle Limited » d345a TAPERED HEADSETS - ANGLE LIMITED D345A ZS44/28.6 | ZS55/40 Alloy Cap/ Cup Sealed Bearings 1-1/8″ to 1.5″ Top Nut: 1-1/8″ Cup O.D.: 44/55 Crown Cone: 39.8 Height: 20.4 Technical Diagram