Surly Single Cog Tees Tool bits are made with

Tool bits are made with premium quality S2 alloy steel for exceptional strength and CNC-cut for precision engagement

Fits the majority of suspension forks and rigid forks

Features a 3

quieter rotor with best-in-class heat management

Surly Single Cog Tees Tool bits are made withSURLY CASSETTE COG Our cassette type cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters. In addition to being a stellar SS cog, the cog base width (where it contacts the freehub body) is 4. 35mm, so you can stack a few of them up and use a 9 speed shifter for a simplified multi speed