Shimano Dura Ace Racing Track Bike Cog (3/32")

This is the 3/32" width, track racing fixed cog from Shimano Japan.
It bears the Dura Ace name, and therefore represents the finest in Japanese production.
Sizes range from 13t to 16t and in order to use this chain, you will also need a 3/32" chain and 3/32" chainring.