First Bicycle Components Co., Ltd. 輪鋒工業股份有限公司

     Specification：
◎  IS42/28.6∣IS52/40
◎  Tapered Integrated Headset
◎  Alloy, Sealed Bearings
◎  ACB 45° x 45°
◎  Top Nut: 1 1/8"
◎  Bearing O.D. : 41.8/52
◎  Crown Cone: 39.8/30
◎  Height: 9.3mm
◎  Weight: 108g
◎  Different Height of Top Cover Version "D40F" Is Available