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

◎ Bolt circle diameter: 130mm
◎ Chainring: 53T x 39T, 52T x 42T, AL-7075 T73 (imported material)
◎ Crank arm length: 165mm, 170mm, 172.5mm, 175mm
◎ Crank arm: forged AL-6061
◎ Average weight: 700g/175mm BB not included
◎ BB: Axle Length-110mm
◎ Chainling: 43.5mm
◎ Speed: 9/10
◎ Finish: polish anodized silver/black
◎ Customed color is available