Surly Track Cog 1/8'' X 17t Silver Model=Race Stem Bag 3 is the perfect way

3 is the perfect way to upgrade your home shop - a stable way to hold nearly any bike off the ground for adjustments cleaning and repair

hanger # 630

Backed by Pedros lifetime warranty

}Park Tool PH-1

border-color:#58675c

Surly Track Cog 1/8'' X 17t Silver Model=Race Stem Bag 3 is the perfect waySurly 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 Tooth Count 17 Size 1 8''