Shimano Dura-Ace, Black
37" x 24 tpi, Black Tooth Count: 15 Shimano Dura-Ace 16t 1/8" Track Cog, Black 1.37" x 24 tpi, Black Tooth Count: 14 Shimano Dura-Ace 15t 1/8" Track Cog, Black 1.37" x 24 tpi, Black Tooth Count: 16.37" x 24 tpi, Black Tooth Count: 15 Shimano Dura-Ace 16t 3/32" Track Cog, Black 1.