MOYON International Co., Ltd.

FIX GEAR freewheel

for fix gear bicycle or track bicycle or single speed bicycle

Material:Cr-Mo steel
full CNC machine
heat treatment 

COG  
1/2"x1/8" , 16T.18T.19T 
Thread size:BC1.37-24tpi.
Color:black or red  in stock

7mm thickness lockring
Color:black, red,purple,blue,orange,pink,green,silver
color is random

1 set=  1 lock-ring and 1 cog