Home » headsets » Tapered Headset – Angle Limited » p549a TAPERED HEADSETS - ANGLE LIMITED P549A EC34/28.6-26tpi | EC49/40 Alloy Sealed Bearings 1-1/8″ to 1.5″ Tapered Head Tube & Steerer Top Nut: 25.4 Cup O.D.: 34/49.6 Crown Cone: 39.8 Height: 37.8 Technical Diagram