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

PF:
◎  IS42/28.6∣IS42/30
◎  Integrated Threadless Headset
◎  Alloy, Sealed Bearings
◎  ACB 45° x 45°
◎  TOP NUT: 1 1/8"
◎  Bearing O.D.: 41.8
◎  CROWN CONE: 30
◎  Height: 16.4mm

PF1:
◎   IS42/25.4∣IS42/27
◎   Integrated Threadless Headset
◎   Alloy, Sealed Bearings
◎   ACB 45° x 45°
◎   TOP NUT: 1"
◎   Bearing O.D.: 41.8
◎   CROWN CONE: 27
◎   Height: 9.6mm