Surly Track Cog 3/32'' X 17t Silver MFPN=00.7018.209.002 Compatible with all 10- 11-

Compatible with all 10- 11- and 12-speed chains with the exception of Shimano 12-speed chains

The longer positive-rake tooth shape has been designed to work with Eagle chains to increase chain retention and overall pedaling efficiency while decreasing friction noise and wear

}Lizard Skins DSP 30

Competition Black SpokesDouble Butted: 2

Surly Track Cog 3/32'' X 17t Silver MFPN=00.7018.209.002 Compatible with all 10- 11-Surly Track Cog 3 32'' X 17t Silver. Surly track cogs are threaded the same as a BMX freewheel (1. 375 x 24 tpi right hand threads). This means that they will fit on single speed rear hubs as well as BMX freewheel hubs but this application is not recommended. Track cogs are meant to work on track hubs only. 415 hardened chromoly steel 1. 375" x 24 tpi Photo for color and material reference only TECH SPECS Tooth Count 17