Carbon Fiber Bicycle Crank/Bicycle Parts(JXYN016)

Carbon Fiber Bicycle Crank/Bicycle Parts(JXYN**6)
Material CARBON 
Use of road vehicles 9S/*0S 
Detailed description 

Specifications: BCD **0mm 
Handle length: **0,**2.5,**5 mm 
Chainring: *3T/*9T AL***5 CNC 
Spindle: Hollow AL***5 
Chainline: *5mm 
CRANK Material: high-grade carbon fiber 
Weight: **0G + /**5G 
Appearance: UD 3K UDA 
Crank has applied for several patents. 
The crank bound to the principle of the mechanical design. Rigidity, strength 2 times stronger than the metal would force issued a hundred percent all the fat delivery to the leg chainring rotation. 
This product has been tested through the national testing agencies