For : Track bike
Teeth option : 65T / 66T
Teeth thickness : 2.9mm
Chain spec. : 1/2" x 1/8"
BCD : 144, 5 bolts
extra charge for customization (special finish, special cutting)
 
* standard finish : 3K. 
* special finish : Radial, Checker Square, Dot, Marble, Hair, UD
* fit fixed-gear bike too
* for special BCD, please contact.